SnapdragonCamera: reset the snapshot status when switch camera

When user quickly trigger the shutter button several times,it is
possible that taking picture fail and casues trigger snapshot
from start preview.
To resolve issue, reset the snapshot status when switch camera.

Change-Id: Ida4961d03668ac09e3fc35bff2d645e4d755eb10
CRs-fixed: 1042288
1 file changed