camera_v2: Don't touch CCI if daemon crashed.

If daemon crashes, refrain from writing to the CCI. This is needed
because these writes will not wait in a process crash scenario and can
potentially leave the CCI in a bad state.

Change-Id: I530cf1d0b507a9b9d2bc5889a0c81609d770a14d
Signed-off-by: Ankit Premrajka <ankitp@codeaurora.org>