Input: initialize device counter variables with -1

Let's initialize atomic_t variables keeping track of number of various
devices created so far with -1 in order to avoid extra subtraction
operation.

Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --cc drivers/input/gameport/gameport.c
Simple merge

diff --cc drivers/input/joystick/xpad.c
Simple merge

diff --cc drivers/input/misc/ims-pcu.c
Simple merge

diff --cc drivers/input/serio/serio.c
Simple merge

diff --cc drivers/input/serio/serio_raw.c
Simple merge