MAINTAINERS: add myself as Methode maintainer

I am currently maintaing the Methode uDPU and eDPU boards so add myself
as the maintainer for them.

Remove the old entry from board/Marvell/mvebu_armada-37xx/MAINTAINERS.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Stefan Roese <sr@denx.de>
diff --git a/MAINTAINERS b/MAINTAINERS
index b85629d..f603b48 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -378,6 +378,14 @@
 F:	tools/mtk_image.h
 N:	mediatek
 
+ARM METHODE SUPPORT
+M:	Robert Marko <robert.marko@sartura.hr>
+S:	Maintained
+F:	arch/arm/dts/armada-3720-eDPU*
+F:	arch/arm/dts/armada-3720-uDPU*
+F:	configs/eDPU_defconfig
+F:	configs/uDPU_defconfig
+
 ARM MICROCHIP/ATMEL AT91
 M:	Eugen Hristev <eugen.hristev@microchip.com>
 S:	Maintained