drm: update MAINTAINERS for qemu drivers (bochs, cirrus, qxl, virtio-gpu)

Changes:
 * add myself as maintainer, so patches land in my inbox.
 * add virtualization@lists.linux-foundation.org mailing list.
 * add drm-qemu git repo.
 * flip bochs and qxl status to "Maintained".

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index 5f0420a..15eadc8 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4106,11 +4106,16 @@
 
 DRM DRIVER FOR BOCHS VIRTUAL GPU
 M:	Gerd Hoffmann <kraxel@redhat.com>
-S:	Odd Fixes
+L:	virtualization@lists.linux-foundation.org
+T:	git git://git.kraxel.org/linux drm-qemu
+S:	Maintained
 F:	drivers/gpu/drm/bochs/
 
 DRM DRIVER FOR QEMU'S CIRRUS DEVICE
 M:	Dave Airlie <airlied@redhat.com>
+M:	Gerd Hoffmann <kraxel@redhat.com>
+L:	virtualization@lists.linux-foundation.org
+T:	git git://git.kraxel.org/linux drm-qemu
 S:	Odd Fixes
 F:	drivers/gpu/drm/cirrus/
 
@@ -4304,7 +4309,10 @@
 
 DRM DRIVER FOR QXL VIRTUAL GPU
 M:	Dave Airlie <airlied@redhat.com>
-S:	Odd Fixes
+M:	Gerd Hoffmann <kraxel@redhat.com>
+L:	virtualization@lists.linux-foundation.org
+T:	git git://git.kraxel.org/linux drm-qemu
+S:	Maintained
 F:	drivers/gpu/drm/qxl/
 F:	include/uapi/drm/qxl_drm.h
 
@@ -13085,6 +13093,7 @@
 M:	Gerd Hoffmann <kraxel@redhat.com>
 L:	dri-devel@lists.freedesktop.org
 L:	virtualization@lists.linux-foundation.org
+T:	git git://git.kraxel.org/linux drm-qemu
 S:	Maintained
 F:	drivers/gpu/drm/virtio/
 F:	include/uapi/linux/virtio_gpu.h