uboot-imx

video: Implement additional video API functions in cfb_console

Implement the new video API functions to provide access to screen size,
etc.

Signed-off-by: Stefan Reinauer <reinauer@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Anatolij Gustschin <agust@denx.de>