Hammerhead camera: Fix unused variables

For build-system CFLAGS clean-up, fix unused variables.

This only cleans the parts of this project using -Werror.

Change-Id: I26ee6aa9c08c3f7ff5a28e4995bbcc4748910e94
Squash cmhw controls for kcal and vibrator

Change-Id: Ib9ce8047fff6983ecb94e8d8efd3ee5f0727aae0
hammerhead: Add sepolicy for hardware tunables

Change-Id: Icd4588175c1fca628fa3027d6cefd53fab7c90e7
hammerhead: Updapte props

* Remove OmaDmclient and SprintHiddenMenu apks, apparently this
  time these actually not got removed accidently
* Add missing gps related files

Change-Id: I20330e8221433ca3f59b3441cdf99509e83b267f
hammerhead: Update build fingerprint and description to 5.0.1 LRX22C

Fix a small derp in the blob file as well.

Change-Id: Ib67e32ff3858c651bd1eabe03487314f5396f515
Cleanup Obsolete LOCAL_PRELINK_MODULE.

Bug: 18675947
Change-Id: Ic00a367b5c108f4a7c18b3ab4d3a1da74cc97353
Suppress trivial warnings from clang compiler.

* Unused formal parameter names.
* Comparing array with null pointer.

Change-Id: I4ffc5a7a94b5bc5508b590686ce16d3ae5f579f4