MAINTAINERS: Update Xe driver maintainers

Add Rodrigo Vivi as an Xe driver maintainer.

v2:
- Cc also Lucas De Marchi (Rodrigo vivi)
- Remove a blank line in commit the commit message (Lucas De Marchi)

Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240602190959.2981-1-thomas.hellstrom@linux.intel.comSigned-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

MAINTAINERS

@@ -11036,6 +11036,7 @@ F:	include/uapi/drm/i915_drm.h
 INTEL DRM XE DRIVER (Lunar Lake and newer)
 M:	Lucas De Marchi <lucas.demarchi@intel.com>
 M:	Thomas Hellström <thomas.hellstrom@linux.intel.com>
+M:	Rodrigo Vivi <rodrigo.vivi@intel.com>
 L:	intel-xe@lists.freedesktop.org
 S:	Supported
 W:	https://drm.pages.freedesktop.org/intel-docs/