Start supporting RSA 3072 keys.
NVMarshal.c: We now accept state that was written by libtpms when RSA keys
sizes were 2048 or are 3072, basically less-or-equal than 3072.
Also increase the NVRAM memory size by ~45 kb to accommodate the worst
case where the USER NVRAM is full of 65 2048 bit persisted keys whose 65
OBJECTs are now expanding and need to again fit into the NVRAM. We have
to add exactly 45760 bytes to accomodate this case. See swtpm test
case test_tpm2_save_load_state_2. 65 * 704 = 45760.
NOTE: BETTER TO NOT BACKPORT!!! MAY NEGATIVELY AFFECT UPGRADE PATH!
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
