Input: gscps2 - fix compilation error introduced with switch to guards

Change 44f92006 ("Input: gscps2 - use guard notation when acquiring
spinlock") introduced typos resulting in compile errors noticed by the
kernel test robot. Fix them.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202410192242.GL0CoAbv-lkp@intel.com/


Fixes: 44f92006 ("Input: gscps2 - use guard notation when acquiring spinlock")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>