Virtual Display demo rotation

Previously virtual displays, such as
chromecast was not possible to permanently
rotate for demo purposes.

This will make virtual displays to appear
rotated.

Change-Id: I433313ab53bdb69e26355997913024bab4e6351d
Test: adb shell setprop persist.demo.userrotation 1 && adb shell setprop persist.demo.userrotation.package_name com.google.android.gms
Bug: 329442350
Bug: 302326003