msm: camera: Add proper camera close sequence

Update camera driver to handle closing sequence properly
when there is a crash in userspace threads to restart
camera again.

Change-Id: I2adc459c53114ce0f8fdd3e7d86425fce63d7e76
CRs-Fixed: 467053
Signed-off-by: Suresh Vankadara <svankada@codeaurora.org>