Origen: Add default clock settings for multimedia IPs

Added clock settings for MFC, FIMC, FB and G3D. They are clocked to
maximum respective frequencies as per datasheet.

Signed-off-by: Annamalai Lakshmanan <annamalai.lakshmanan@linaro.org>
Signed-off-by: Giridhar Maruthy <giridhar.maruthy@linaro.org>
Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>