msm: camera: Add spinlock protection for flags in CCI driver

The race conditions in accessing the CCI queue control flags
are resulting in CCI timeout issues. Added spinlocks to avoid
these issues.

Change-Id: I13ceeb4f5a139d7d66bbf98ac541590d65ca526b
Signed-off-by: Ravi Kishore Tanuku <rktanuku@codeaurora.org>