MAINTAINERS: sync omap devicetree maintainers with omap platform

Both used to go through Tony's branches, so lets keep things together.
This was missed at the time when Co-Maintainers were added.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Link: https://patch.msgid.link/20240915195321.1071967-1-andreas@kemnade.info
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20251118192652.316198-1-khilman@baylibre.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Author: akemnade

MAINTAINERS

@@ -18779,6 +18779,10 @@ S:	Maintained
 F:	arch/arm/*omap*/*clock*
 
 OMAP DEVICE TREE SUPPORT
+M:	Aaro Koskinen <aaro.koskinen@iki.fi>
+M:	Andreas Kemnade <andreas@kemnade.info>
+M:	Kevin Hilman <khilman@baylibre.com>
+M:	Roger Quadros <rogerq@kernel.org>
 M:	Tony Lindgren <tony@atomide.com>
 L:	linux-omap@vger.kernel.org
 L:	devicetree@vger.kernel.org