Export the VBR bit rate-control for VP9 encoding on KBL
Export the VBR bit rate-control for VP9 encoding on KBL

Signed-off-by: Zhao Yakui <21bae65ecea50a19bd9d0fef489914760189fd5b@intel.com>
Reviewed-by: Sean V Kelley <56c4ee8950656f8ee63ca686448cb9aeaf109ab0@intel.com>

01org/iotg-lin-gfx-va-driver,uartie/vaapi-intel-driver,uartie/vaapi-intel-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver,uartie/vaapi-intel-driver,uartie/vaapi-intel-driver,uartie/vaapi-intel-driver,01org/iotg-lin-gfx-va-driver,01org/iotg-lin-gfx-va-driver