MAINTAINERS: at91: update entry for at91 boards

Updated the maintainership for the at91 boards.

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
diff --git a/board/atmel/at91sam9n12ek/MAINTAINERS b/board/atmel/at91sam9n12ek/MAINTAINERS
index 82a9192..0d33340 100644
--- a/board/atmel/at91sam9n12ek/MAINTAINERS
+++ b/board/atmel/at91sam9n12ek/MAINTAINERS
@@ -1,5 +1,5 @@
 AT91SAM9N12EK BOARD
-M:	Josh Wu <josh.wu@atmel.com>
+M:	Eugen Hristev <eugen.hristev@microchip.com>
 S:	Maintained
 F:	board/atmel/at91sam9n12ek/
 F:	include/configs/at91sam9n12ek.h