vp9: Add check to validate source input Return invalid_params. The check is wrapped around a new control: VP9E_SET_VALIDATE_INPUT_HBD, and is enabled by default. Check is done only CONFIG_VP9_HIGHBITDEPTH build and for bitdepth > 8. Bug: 488585490 Change-Id: Ic79dff1bd314d4b197087d3c46d315ece8fd355c