ARM: dts: msm: Change camera mount angle for QRD 8916 devices

Change rear camera mount angle for QRD 8916 devices. The old
setting is incorrect and preview of rear camera is upside
down. Update camera mount angle to correct this issue.

Change-Id: I56b868cb31cba22c8638a0849e53d3d39dc93989
Signed-off-by: Wei Ding <weiding@codeaurora.org>