sunxi: Make avs compile.

Functionality not tested.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>

Conflicts:
	drivers/media/video/sun4i/sun4i_avs.c
	drivers/media/video/sun5i/sun5i_avs.c
Add kitchensink to defconfig.

Signed-off-by: Michal Suchanek <hramrach@gmail.com>