libmix: reset mRotationDegree when setupVA

BZ: 180000

Need to reset mRotationDegree when setupVA to make sure
to pass latest rotation info to driver part

Change-Id: I36ed1d957e8a230f008dcc9033e51ecdecf9571f
Signed-off-by: Nana GUo <nana.n.guo@intel.com>
1 file changed