MAINTAINERS: update u-boot-atmel tree

Update Atmel AT91 maintainership
Signed-off-by: NEugen Hristev <eugen.hristev@microchip.com>
Acked-by: NNicolas Ferre <nicolas.ferre@microchip.com>

MAINTAINERS

@@ -113,12 +113,6 @@ F:	drivers/video/meson/
 F:	include/configs/meson64.h
 N:	meson
 
-ARM ATMEL AT91
-M:	Andreas Bießmann <andreas@biessmann.org>
-S:	Maintained
-T:	git git://git.denx.de/u-boot-atmel.git
-F:	arch/arm/mach-at91/
-
 ARM BROADCOM BCM283X
 M:	Alexander Graf <agraf@suse.de>
 S:	Maintained
@@ -212,6 +206,13 @@ F:	tools/mtk_image.c
 F:	tools/mtk_image.h
 N:	mediatek
 
+ARM MICROCHIP/ATMEL AT91
+M:	Eugen Hristev <eugen.hristev@microchip.com>
+S:	Maintained
+T:	git git://git.denx.de/u-boot-atmel.git
+F:	arch/arm/mach-at91/
+F:	board/atmel/
+
 ARM OWL
 M:	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
 S:	Maintained