media: platform: s5p-mfc: move config to its own file

In order to better organize the platform/Kconfig, place
s5p-mfc-specific config stuff on a separate Kconfig file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/Kconfig

@@ -113,14 +113,7 @@ config VIDEO_SAMSUNG_S5P_JPEG
 	  This is a v4l2 driver for Samsung S5P, EXYNOS3250
 	  and EXYNOS4 JPEG codec
 
-config VIDEO_SAMSUNG_S5P_MFC
-	tristate "Samsung S5P MFC Video Codec"
-	depends on V4L_MEM2MEM_DRIVERS
-	depends on VIDEO_DEV && VIDEO_V4L2
-	depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
-	select VIDEOBUF2_DMA_CONTIG
-	help
-	    MFC 5.1 and 6.x driver for V4L2
+source "drivers/media/platform/s5p-mfc/Kconfig"
 
 source "drivers/media/platform/sti/bdisp/Kconfig"
 

drivers/media/platform/s5p-mfc/Kconfig

+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_SAMSUNG_S5P_MFC
+	tristate "Samsung S5P MFC Video Codec"
+	depends on V4L_MEM2MEM_DRIVERS
+	depends on VIDEO_DEV && VIDEO_V4L2
+	depends on ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
+	select VIDEOBUF2_DMA_CONTIG
+	help
+	    MFC 5.1 and 6.x driver for V4L2