Add support for new window orientation sensor.

If we have a window orientation sensor available then we can defer
our orientation calculation to it and potentially let the AP go into
XO shutdown.

By default we'll use the typical accelerometer-based sensor unless
the device tells us the name of the sensor to look for.

Bug: 23038651
Change-Id: I94f02e0639956a7a6a3ab85710aa0f2537fbf7f3