memstick: r592: fix build warnings for !PM_SLEEP
memstick: r592: fix build warnings for !PM_SLEEP

When PM_SLEEP is not enabled, the r592_clear_interrupts() function is
never used.  If so, don't build it to prevent a compiler warning.

Signed-off-by: Thierry Reding <3055038c414aef68bf32c33b8118623e7554e0f2@nvidia.com>
Cc: Maxim Levitsky <987dc8b9c8aa842b87027603482f1f602de1ce0a@gmail.com>
Signed-off-by: Andrew Morton <5c1e68b099950c134891f0b6e179498a8ebe9cf9@linux-foundation.org>
Signed-off-by: Linus Torvalds <69652caca27c8b940640ad396ab71f93cacec34f@linux-foundation.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs