ANDROID: add pwm_apply_state() function back

pwm_apply_state() was renamed to pwm_apply_might_sleep() in commit
a10c3d5f ("pwm: Rename pwm_apply_state() to
pwm_apply_might_sleep()") but many external modules were already
expecting to use this function.  So put it back as a wrapper so that
things continue to build properly.

Bug: 161946584
Bug: 383917985
Fixes: a10c3d5f ("pwm: Rename pwm_apply_state() to pwm_apply_might_sleep()")
Change-Id: I79901fc07206b1a3c65593b6d5e5e7d6924aa197
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
(cherry picked from commit cfa231a1)