msm: camera: icp: shut down icp clk when needed

Add timer for bps and ipe hardware, shut down the
clock when the hw is not used.

Change-Id: If0fa85e3cb2990ce1788c42a85c60e0826399dd9
Signed-off-by: Junzhe Zou <jnzhezou@codeaurora.org>
Signed-off-by: Alok Pandey <akumarpa@codeaurora.org>