Separate the internal and external display rotations.

When attached to an HDMI touch screen, the input system needs
to know the size and rotation of the external display independent
of the internal display.  The size was already being reported
separately but not the rotation.  The inconsistency can cause problems
if the internal display's natural rotation is portrait but
the external display's natural rotation is landscape.

Change-Id: Id344f04c1ba032625f6265766be66f9ddaa2cc0b