sh: mach-migor: Enable ov772x and tw9910 in defconfig.

This patch updates the Migo-R defconfig to include
ov772x camera and tw9910 video driver

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>