toshiba_acpi: Bump driver version to 0.22

This patch simply bumps the driver version to 0.22, as significant
changes were made to the driver, such as cleanups, updated events,
keymap handling, fixes and the bluetooth rfkill code removal.

Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>