ARM: atmel: add sama5d4 xplained ultra board support

The code for this board supports following features:
  - Boot media support: NAND flash/SD card/SPI flash
  - Support LCD display (optional, disabled by default)
  - Support ethernet
  - Support USB mass storage

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/board/atmel/sama5d4_xplained/MAINTAINERS b/board/atmel/sama5d4_xplained/MAINTAINERS
new file mode 100644
index 0000000..035f64c
--- /dev/null
+++ b/board/atmel/sama5d4_xplained/MAINTAINERS
@@ -0,0 +1,8 @@
+SAMA5D4 XPLAINED ULTRA BOARD
+M:	Bo Shen <voice.shen@atmel.com>
+S:	Maintained
+F:	board/atmel/sama5d4_xplained/
+F:	include/configs/sama5d4_xplained.h
+F:	configs/sama5d4_xplained_mmc_defconfig
+F:	configs/sama5d4_xplained_nandflash_defconfig
+F:	configs/sama5d4_xplained_spiflash_defconfig