ARM: exynos_defconfig: Enable MFC driver as module

Exynos SoCs have a Multi Format Video Hardware Codec (MFC) IP block that
can be used to {en,de}code video streams by hardware. Enable support for
its driver as a module so the MFC can be tested.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

arch/arm/configs/exynos_defconfig

@@ -153,6 +153,7 @@ CONFIG_VIDEO_EXYNOS_FIMC_LITE=m
 CONFIG_VIDEO_EXYNOS4_FIMC_IS=m
 CONFIG_V4L_MEM2MEM_DRIVERS=y
 CONFIG_VIDEO_SAMSUNG_S5P_JPEG=m
+CONFIG_VIDEO_SAMSUNG_S5P_MFC=m
 CONFIG_DRM=y
 CONFIG_DRM_NXP_PTN3460=y
 CONFIG_DRM_PARADE_PS8622=y