ARM: multi_v7_defconfig: Enable drivers for Exynos4210 Universal C210 board

Enable drivers needed to get Exynos 4210 Universal C210 board working:
MAX8998 MFD and regulators, GPIO-based bit-bang SPI, Exynos DRM FIMD
parallel output and Samsung LD9040 RGB panel.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>