MAINTAINERS: Add maintainer for hyperv video device

Maintainer for hyperv synthetic video device.
Signed-off-by: Deepak Rawat <drawat.floss@gmail.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20210527112230.1274-3-drawat.floss@gmail.com

MAINTAINERS

@@ -6084,6 +6084,14 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	Documentation/devicetree/bindings/display/hisilicon/
 F:	drivers/gpu/drm/hisilicon/
 
+DRM DRIVER FOR HYPERV SYNTHETIC VIDEO DEVICE
+M:	Deepak Rawat <drawat.floss@gmail.com>
+L:	linux-hyperv@vger.kernel.org
+L:	dri-devel@lists.freedesktop.org
+S:	Maintained
+T:	git git://anongit.freedesktop.org/drm/drm-misc
+F:	drivers/gpu/drm/hyperv
+
 DRM DRIVERS FOR LIMA
 M:	Qiang Yu <yuq825@gmail.com>
 L:	dri-devel@lists.freedesktop.org