Move all crates to workspace root

Having all the workspace crates under the crates/ directory is
unnecessary. Rust documentation itself recommends all crates to be in
the root directory:

https://doc.rust-lang.org/book/ch14-03-cargo-workspaces.html#creating-the-second-package-in-the-workspace

I paste the text content here, in case the online page ever changes or
becomes unavailable:

    ## Creating the Second Package in the Workspace

    Next, let’s create another member package in the workspace and call it add_one. Change the top-level Cargo.toml to specify the add_one path in the members list:

    Filename: Cargo.toml

    [workspace]

    members = [
        "adder",
        "add_one",
    ]

    Then generate a new library crate named add_one:

    $ cargo new add_one --lib
         Created library `add_one` package

    Your add directory should now have these directories and files:

    ├── Cargo.lock
    ├── Cargo.toml
    ├── add_one
    │   ├── Cargo.toml
    │   └── src
    │       └── lib.rs
    ├── adder
    │   ├── Cargo.toml
    │   └── src
    │       └── main.rs
    └── target

Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>

Cargo.toml

@@ -2,10 +2,10 @@
 resolver = "2"
 
 members = [
-    "crates/vhost-device-gpio",
-    "crates/vhost-device-i2c",
-    "crates/vhost-device-rng",
-    "crates/vhost-device-scsi",
-    "crates/vhost-device-scmi",
-    "crates/vhost-device-vsock",
+    "vhost-device-gpio",
+    "vhost-device-i2c",
+    "vhost-device-rng",
+    "vhost-device-scsi",
+    "vhost-device-scmi",
+    "vhost-device-vsock",
 ]

README.md

@@ -8,12 +8,12 @@ crates.
 
 Here is the list of device backends that we support:
 
-- [GPIO](https://github.com/rust-vmm/vhost-device/blob/main/crates/vhost-device-gpio/README.md)
-- [I2C](https://github.com/rust-vmm/vhost-device/blob/main/crates/vhost-device-i2c/README.md)
-- [RNG](https://github.com/rust-vmm/vhost-device/blob/main/crates/vhost-device-rng/README.md)
-- [SCMI](https://github.com/rust-vmm/vhost-device/blob/main/crates/vhost-device-scmi/README.md)
-- [SCSI](https://github.com/rust-vmm/vhost-device/blob/main/crates/vhost-device-scsi/README.md)
-- [VSOCK](https://github.com/rust-vmm/vhost-device/blob/main/crates/vhost-device-vsock/README.md)
+- [GPIO](https://github.com/rust-vmm/vhost-device/blob/main/vhost-device-gpio/README.md)
+- [I2C](https://github.com/rust-vmm/vhost-device/blob/main/vhost-device-i2c/README.md)
+- [RNG](https://github.com/rust-vmm/vhost-device/blob/main/vhost-device-rng/README.md)
+- [SCMI](https://github.com/rust-vmm/vhost-device/blob/main/vhost-device-scmi/README.md)
+- [SCSI](https://github.com/rust-vmm/vhost-device/blob/main/vhost-device-scsi/README.md)
+- [VSOCK](https://github.com/rust-vmm/vhost-device/blob/main/vhost-device-vsock/README.md)
 
 For `vhost-user` device backends that have no final specification merged into
 the [VIRTIO specification](https://github.com/oasis-tcs/virtio-spec), or have partial functionality, we have a [staging

crates/vhost-device-gpio/LICENSE-APACHE

@@ -1 +0,0 @@
-../../LICENSE-APACHE

crates/vhost-device-gpio/LICENSE-BSD-3-Clause

@@ -1 +0,0 @@
-../../LICENSE-BSD-3-Clause

crates/vhost-device-i2c/LICENSE-APACHE

@@ -1 +0,0 @@
-../../LICENSE-APACHE

crates/vhost-device-i2c/LICENSE-BSD-3-Clause

@@ -1 +0,0 @@
-../../LICENSE-BSD-3-Clause

crates/vhost-device-rng/LICENSE-APACHE

@@ -1 +0,0 @@
-../../LICENSE-APACHE

crates/vhost-device-rng/LICENSE-BSD-3-Clause

@@ -1 +0,0 @@
-../../LICENSE-BSD-3-Clause

crates/vhost-device-scmi/LICENSE-APACHE

@@ -1 +0,0 @@
-../../LICENSE-APACHE

crates/vhost-device-scmi/LICENSE-BSD-3-Clause

@@ -1 +0,0 @@
-../../LICENSE-BSD-3-Clause

crates/vhost-device-scsi/LICENSE-APACHE

@@ -1 +0,0 @@
-../../LICENSE-APACHE

crates/vhost-device-scsi/LICENSE-BSD-3-Clause

@@ -1 +0,0 @@
-../../LICENSE-BSD-3-Clause

crates/vhost-device-vsock/LICENSE-APACHE

@@ -1 +0,0 @@
-../../LICENSE-APACHE

crates/vhost-device-vsock/LICENSE-BSD-3-Clause

@@ -1 +0,0 @@
-../../LICENSE-BSD-3-Clause

vhost-device-gpio/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-APACHE

vhost-device-gpio/LICENSE-BSD-3-Clause

@@ -0,0 +1 @@
+../LICENSE-BSD-3-Clause

vhost-device-i2c/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-APACHE

vhost-device-i2c/LICENSE-BSD-3-Clause

@@ -0,0 +1 @@
+../LICENSE-BSD-3-Clause

vhost-device-rng/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-APACHE

vhost-device-rng/LICENSE-BSD-3-Clause

@@ -0,0 +1 @@
+../LICENSE-BSD-3-Clause

vhost-device-scmi/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-APACHE

vhost-device-scmi/LICENSE-BSD-3-Clause

@@ -0,0 +1 @@
+../LICENSE-BSD-3-Clause

vhost-device-scsi/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-APACHE

vhost-device-scsi/LICENSE-BSD-3-Clause

@@ -0,0 +1 @@
+../LICENSE-BSD-3-Clause

vhost-device-vsock/LICENSE-APACHE

@@ -0,0 +1 @@
+../LICENSE-APACHE

vhost-device-vsock/LICENSE-BSD-3-Clause

@@ -0,0 +1 @@
+../LICENSE-BSD-3-Clause