some touchwake improvements:
- reenable touchwake after proximity
- After simulating a power button press delay the mutex unlock to preve… …
…nt spurious additional presses after that.
- Trying to fix issues with touchwake during call (stratosk)

Change-Id: Id25b49224e1e7bc7335a033521784fcad0fdae2d
touchwake: trying to fix sometimes unresponsive device

Change-Id: I5cd176df99a0970a1974d98d11b91dbd2d75d9bd

Conflicts:
	drivers/input/touchscreen/mms152_ts.c
touchwake for i9300