PINEPHONE: Auto rotate inverted about glodroid_manifest

[rsglobal]

It seems that X and Y coordinates of accelerometer are swapped.

1. https://developer.android.com/guide/topics/sensors/sensors_overview#sensors-coords
2. http://josejuansanchez.org/android-sensors-overview/accelerometer/README.html

[rsglobal]

I've added correct mount matrix into pinephone.dtsi that fixed this issue for me.

		mount-matrix = "0", "-1", "0",
			       "1", "0", "0",
			       "0", "0", "1";

[rsglobal]

Change is available in the next integration build:
#58 (comment)

[rsglobal]

IOS orientation: https://developer.apple.com/documentation/uikit/uiacceleration?language=objc