PM / Sleep: Make the limit of user space wakeup sources configurable

Make it possible to configure out the check against the limit of
user
space wakeup sources for debugging and default Android
builds.

Change-Id:
I8f74d7c8391627df970d2df666938069b012e2fe
Signed-off-by: Rafael J.
Wysocki <rjw@sisk.pl>
Acked-by: Arve Hjonnevag
<arve@android.com>
Git-commit: c73893e
Git-repo:
git://codeaurora.org/kernel/msm.git
Signed-off-by: Anurag Singh
<anursing@codeaurora.org>

idea is taken here -
https://github.com/rmbq/android_kernel_htc_msm8960/commit/99b540eff046d5939d6c618265a823058eb8e53d