msm: camera: icp: Featurize ICP, IPE, BPS power collapse

Add provision to dynamically enable/disable ipe & bps power
collapse. By default, interframe power collapse is enabled.
To disable power collapse use the following cmds

ICP PC:
adb shell "echo 0 > /sys/kernel/debug/camera_icp/icp_pc"

InterFrame PC:
adb shell "echo 0 > /sys/kernel/debug/camera_icp/ipe_bps_pc"

Change-Id: I7658efad8a6d2ce601ea2297bdc086c9386cd28c
Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>
Signed-off-by: Alok Pandey <akumarpa@codeaurora.org>