Implemented full scan AF followed by capture on long pressing the shutter button.

1. In CAF, do full scan AF followed by capture on long pressing the
   shutter button.
2. Capture is triggered only if long press is released on the button.

bug:5447399

Change-Id: I9c7d75d76074e2e20d1f1926388315cec2c22eed
Signed-off-by: Raji Reddy Kandi <rajireddy.k@samsung.com>
Signed-off-by: Sam Braganza <sam.braganza@samsung.com>
Signed-off-by: heech.park <heech.park@samsung.com>
Signed-off-by: heech.park <heech.park@samsung.com>
3 files changed