msm: camera: secure camera support

Adding relay driver functionality for camera sensor
module to pass cci commands to trustzone and operate
in secure mode.

Change-Id: I3d1345118df151f8521d5ad230311a56105b5f4a
Signed-off-by: Alexander Kolesnikov <akolesni@codeaurora.org>
Signed-off-by: Amit Blay <ablay@codeaurora.org>
Signed-off-by: Nishant Pandit <npandit@codeaurora.org>
Signed-off-by: Sureshnaidu Laveti <lsuresh@codeaurora.org>