cleanup rotation degree settings.

BZ: 149979

mRotationDegress is not initialized. setRotationDegress function is
cleaned up so it can be used during VA setup.

Change-Id: I0f8a62f4694f6048de131d4a170d5b1cf70878e7
Signed-off-by: Andy Qiu <junhai.qiu@intel.com>
Signed-off-by: pingshix <pingx.shi@intel.com>
5 files changed