drm/vmwgfx: update MAINTAINERS entry

Maintainer switch from Thomas Hellstrom to Roland Scheidegger
Reviewed-by: Charmaine Lee <charmainel@vmware.com>
Reviewed-by: Neha Bhende <bhenden@vmware.com>
Acked-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Roland Scheidegger <sroland@vmware.com>

MAINTAINERS

@@ -5507,10 +5507,10 @@ F:	drivers/gpu/drm/vboxvideo/
 
 DRM DRIVER FOR VMWARE VIRTUAL GPU
 M:	"VMware Graphics" <linux-graphics-maintainer@vmware.com>
-M:	Thomas Hellstrom <thellstrom@vmware.com>
+M:	Roland Scheidegger <sroland@vmware.com>
 L:	dri-devel@lists.freedesktop.org
 S:	Supported
-T:	git git://people.freedesktop.org/~thomash/linux
+T:	git git://people.freedesktop.org/~sroland/linux
 F:	drivers/gpu/drm/vmwgfx/
 F:	include/uapi/drm/vmwgfx_drm.h