QCamera2: Suppress torch mode status change for camera without a flash
QCamera2: Suppress torch mode status change for camera without a flash

When the camera is opened, a callback is triggered to reserve the
camera's flash for camera usage only. Previously, the callback
would happen even if there is no flash associated with the camera.
Now, the callback is suppressed for any camera which does not have
a flash.

Bug: 20069129
Change-Id: I816737b3b7c4976db84bbbe0e71658ababa804f7
Signed-off-by: D. Andrei Măceș <8dc7c09356db0b1762fb140617d7375c0a5a4131@unlegacy-android.org>

maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead,maruos/android_device_lge_hammerhead