Rotate X11 screen for Hildon desktop by default

Created by: ollieparanoid

Hildon looks strange, when the screeen is not rotated by 90 degrees for most phones.

@montvid wrote in https://github.com/postmarketOS/pmbootstrap/pull/713#issuecomment-337570371:

I propose adding xrandr and xinput apks to hildon and adding lines to sh: xrandr -o right xinput set-prop '*Your touchscreen name' 'Coordinate Transformation Matrix' \ 0 1 0 -1 0 1 0 0 1 *if someone knows how to parse the name of the touch device please share. https://wiki.ubuntu.com/X/InputCoordinateTransformation