Revert "msm: camera: icp: lock before updating clock status"

This reverts commit 6094f665.
The change introduces a lock around a code that can cause sleep.
It results in abnormal operation of camera functionality. Reverting
this change will lead to original problem of stability. That need
to be addressed.

Change-Id: I3899d6992350bc466e89ee1ca1834a8a7fbd0269
Signed-off-by: Alok Pandey <akumarpa@codeaurora.org>