MAINTAINERS: Update the files list for the Renesas DRM drivers

Cc: Laurent Pinchart <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Emil Velikov <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: evelikov

MAINTAINERS

@@ -3881,6 +3881,7 @@ S:	Supported
 F:	drivers/gpu/drm/rcar-du/
 F:	drivers/gpu/drm/shmobile/
 F:	include/linux/platform_data/shmob_drm.h
+F:	Documentation/devicetree/bindings/display/renesas,du.txt
 
 DRM DRIVERS FOR ROCKCHIP
 M:	Mark Yao <[email protected]>