arm/dt: msm8974: Change mount angle of OV2720 sensor

Front camera preview is oriented at 270 degree. Change mount angle
property for OV2720 sensor device to fix the issue.

Change-Id: I89fabd80db8a96c7ea63b060444a2676f2cea868
Signed-off-by: Sreesudhan Ramakrish Ramkumar <srramku@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974-camera-sensor.dtsi b/arch/arm/boot/dts/msm8974-camera-sensor.dtsi
index 49bb305..c3e205f 100644
--- a/arch/arm/boot/dts/msm8974-camera-sensor.dtsi
+++ b/arch/arm/boot/dts/msm8974-camera-sensor.dtsi
@@ -58,7 +58,7 @@
 		qcom,led-flash-sd-index = <0>;
 		qcom,csiphy-sd-index = <2>;
 		qcom,csid-sd-index = <0>;
-		qcom,mount-angle = <180>;
+		qcom,mount-angle = <90>;
 		qcom,sensor-name = "ov2720";
 		cam_vdig-supply = <&pm8941_l3>;
 		cam_vana-supply = <&pm8941_l17>;