Input: edt-ft5x06 - unify the crc check

With this patch, the CRC is always verified by the same function, even in
the case of accessing registers where the number of bytes is minimal.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Link: https://lore.kernel.org/r/20230402200951.1032513-9-dario.binacchi@amarulasolutions.com


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>