media: MAINTAINERS: add entry for Freescale i.MX7 media driver

Add maintainer entry for the imx7 media csi, mipi csis driver,
dt-bindings and documentation.
Signed-off-by: NRui Miguel Silva <rui.silva@linaro.org>
Acked-by: NSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: NHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab+samsung@kernel.org>

MAINTAINERS

@@ -9357,6 +9357,17 @@ T:	git git://linuxtv.org/media_tree.git
 S:	Maintained
 F:	drivers/media/platform/imx-pxp.[ch]
 
+MEDIA DRIVERS FOR FREESCALE IMX7
+M:	Rui Miguel Silva <rmfrfs@gmail.com>
+L:	linux-media@vger.kernel.org
+T:	git git://linuxtv.org/media_tree.git
+S:	Maintained
+F:	Documentation/devicetree/bindings/media/imx7-csi.txt
+F:	Documentation/devicetree/bindings/media/imx7-mipi-csi2.txt
+F:	Documentation/media/v4l-drivers/imx7.rst
+F:	drivers/staging/media/imx/imx7-media-csi.c
+F:	drivers/staging/media/imx/imx7-mipi-csis.c
+
 MEDIA DRIVERS FOR HELENE
 M:	Abylay Ospan <aospan@netup.ru>
 L:	linux-media@vger.kernel.org