camera: Freeze camera headers for H

 * Prevent merge issues and userspace breakage.
 * Also delete unused bits from H driver

Change-Id: Ie8aeab039395ceb6586612dc89b9b25ec31ad65c

Conflicts:

	arch/arm/mach-msm/include/mach/camera2.h
	include/media/msm_cam_sensor.h