RMI4 F1A implements capacitive keys. Add support for touch keys found in
some Synaptics touch controller configurations.
Signed-off-by: André Apitzsch <git@apitzsch.eu>
Link: https://lore.kernel.org/r/20250707-rmi4_f1a-v1-2-838d83c72e7f@apitzsch.eu
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
