AVR32: ATNGW100 board support

Add support for the ATNGW100 Network Gateway reference design,
including flash, ethernet and MMC support.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
diff --git a/MAINTAINERS b/MAINTAINERS
index de0fbdf..33039ca 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -668,6 +668,7 @@
 	ATSTK1002		AT32AP7000
 	ATSTK1003		AT32AP7001
 	ATSTK1004		AT32AP7002
+	ATNGW100		AT32AP7000
 
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