camera: Support non-standard FFC orientations

Most of the FFC-related code assumes a number of rotation and
reorientation hooks are required before the image can be
displayed and/or saved.
If the FFC claims an orientation of 90 degrees (same as a back-cam)
skip all of those, and treat it like a back-facing camera.

Change-Id: Ia0a77a94d0fe56790330ec581610adaec975edb9