Merge \\\\\\\"docs: Updated descriptions of device orientation angles.\\\\\\\"...

Merge \\\\\\\"docs: Updated descriptions of device orientation angles.\\\\\\\" into mnc-docs am: d312201b am: 6b4d2a2e am: a812012c am: b9487874 am: 55b52a2b am: 87a8e5ee
am: 6aa83449

Change-Id: I9eb2556d72919f43e84336d57b6276028669f627