Input: misc - use __maybe_unused instead of ifdef around suspend/resume

Use __maybe_unused instead of ifdef guards around suspend/resume
functions, in order to increase build coverage and fix build warnings.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --cc drivers/input/misc/88pm860x_onkey.c
Simple merge

diff --cc drivers/input/misc/ad714x-i2c.c
Simple merge

diff --cc drivers/input/misc/ad714x-spi.c
Simple merge

diff --cc drivers/input/misc/adxl34x-i2c.c
Simple merge

diff --cc drivers/input/misc/adxl34x-spi.c
Simple merge

diff --cc drivers/input/misc/drv260x.c
Simple merge

diff --cc drivers/input/misc/drv2667.c
Simple merge

diff --cc drivers/input/misc/gp2ap002a00f.c
Simple merge

diff --cc drivers/input/misc/kxtj9.c
Simple merge

diff --cc drivers/input/misc/max77693-haptic.c
Simple merge

diff --cc drivers/input/misc/max8925_onkey.c
Simple merge

diff --cc drivers/input/misc/max8997_haptic.c
Simple merge

diff --cc drivers/input/misc/palmas-pwrbutton.c
Simple merge

diff --cc drivers/input/misc/pm8xxx-vibrator.c
Simple merge

diff --cc drivers/input/misc/pmic8xxx-pwrkey.c
Simple merge

diff --cc drivers/input/misc/pwm-beeper.c
Simple merge

diff --cc drivers/input/misc/sirfsoc-onkey.c
Simple merge

diff --cc drivers/input/misc/twl4030-vibra.c
Simple merge

diff --cc drivers/input/misc/twl6040-vibra.c
Simple merge