media: sun6i-csi: Tidy up Kconfig

Update the option title and help, group related options together,
add dependency on VIDEO_DEV since the driver uses it and update the
description.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

drivers/media/platform/sunxi/sun6i-csi/Kconfig

 # SPDX-License-Identifier: GPL-2.0-only
 config VIDEO_SUN6I_CSI
-	tristate "Allwinner V3s Camera Sensor Interface driver"
-	depends on V4L_PLATFORM_DRIVERS
-	depends on VIDEO_DEV && COMMON_CLK && RESET_CONTROLLER && HAS_DMA && PM
+	tristate "Allwinner A31 Camera Sensor Interface (CSI) Driver"
+	depends on V4L_PLATFORM_DRIVERS && VIDEO_DEV
 	depends on ARCH_SUNXI || COMPILE_TEST
+	depends on PM && COMMON_CLK && RESET_CONTROLLER && HAS_DMA
 	select MEDIA_CONTROLLER
 	select VIDEO_V4L2_SUBDEV_API
 	select VIDEOBUF2_DMA_CONTIG
-	select REGMAP_MMIO
 	select V4L2_FWNODE
+	select REGMAP_MMIO
 	help
-	   Support for the Allwinner Camera Sensor Interface Controller on V3s.
+	   Support for the Allwinner A31 Camera Sensor Interface (CSI)
+	   controller, also found on other platforms such as the A83T, H3,
+	   V3/V3s or A64.