MAINTAINERS: uDPU: make myself maintainer of it

Vladimir is no longer at the company, so I am stepping up to maintain the
Methode boards.
Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

MAINTAINERS

@@ -13847,7 +13847,7 @@ F:	Documentation/devicetree/bindings/media/amlogic,gx-vdec.yaml
 F:	drivers/staging/media/meson/vdec/
 
 METHODE UDPU SUPPORT
-M:	Vladimir Vid <vladimir.vid@sartura.hr>
+M:	Robert Marko <robert.marko@sartura.hr>
 S:	Maintained
 F:	arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts