Add a config resource to force HDMI rotation on some devices.

If the hardware composer HAL does not provide full support for
multiple displays, it may be necessary to force the HDMI rotation
when not docked.  (When docked, we can use the dock's orientation.)

This configuration is not expected to be used on newer devices
with the requisite HAL support and may be removed in the future.

Bug: 8511721
Change-Id: I1ff50f00ee7fe621aceff94bd938ecf6385c3f38