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/arch/arm/Kconfig b/arch/arm/Kconfig
index 1a83683..9b492be 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -509,6 +509,10 @@
 	select CPU_V7
 	select SUPPORT_SPL
 
+config TARGET_SAMA5D4_XPLAINED
+	bool "Support sama5d4_xplained"
+	select CPU_V7
+
 config TARGET_SAMA5D4EK
 	bool "Support sama5d4ek"
 	select CPU_V7
@@ -848,6 +852,7 @@
 source "board/atmel/at91sam9x5ek/Kconfig"
 source "board/atmel/sama5d3_xplained/Kconfig"
 source "board/atmel/sama5d3xek/Kconfig"
+source "board/atmel/sama5d4_xplained/Kconfig"
 source "board/atmel/sama5d4ek/Kconfig"
 source "board/bachmann/ot1200/Kconfig"
 source "board/balloon3/Kconfig"