MAINTAINERS: add entry for Rockchip ISP1 driver

Add MAINTAINERS entry for the rockchip isp1 driver.

Signed-off-by: Helen Koike <helen.koike@collabora.com>

MAINTAINERS

@@ -13518,6 +13518,14 @@ F:	drivers/hid/hid-roccat*
 F:	include/linux/hid-roccat*
 F:	Documentation/ABI/*/sysfs-driver-hid-roccat*
 
+ROCKCHIP ISP V1 DRIVER
+M:	Helen Koike <helen.koike@collabora.com>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+F:	drivers/media/platform/rockchip/isp1/
+F:	Documentation/devicetree/bindings/media/rockchip-isp1.txt
+F:	Documentation/devicetree/bindings/media/rockchip-mipi-dphy.txt
+
 ROCKCHIP RASTER 2D GRAPHIC ACCELERATION UNIT DRIVER
 M:	Jacob chen <jacob2.chen@rock-chips.com>
 L:	linux-media@vger.kernel.org