arm: Remove ethernut5 board

As per the maintainers at egnite GmbH, they are no longer interested in
supporting this board. Go and remove the platform here. Furthermore,
this is the only AT91SAM9XE platform in-tree so remove supporting code
for that as well.

Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/arch/arm/mach-at91/include/mach/at91sam9260.h b/arch/arm/mach-at91/include/mach/at91sam9260.h
index 103db26..bdd46ee 100644
--- a/arch/arm/mach-at91/include/mach/at91sam9260.h
+++ b/arch/arm/mach-at91/include/mach/at91sam9260.h
@@ -7,7 +7,7 @@
  * Reinhard Meyer, EMK Elektronik, reinhard.meyer@emk-elektronik.de
  *
  * Definitions for the SoCs:
- * AT91SAM9260, AT91SAM9G20, AT91SAM9XE
+ * AT91SAM9260, AT91SAM9G20
  *
  * Note that those SoCs are mostly software and pin compatible,
  * therefore this file applies to all of them. Differences between
@@ -142,15 +142,7 @@
 /*
  * SoC specific defines
  */
-#if defined(CONFIG_AT91SAM9XE)
-# define ATMEL_CPU_NAME		"AT91SAM9XE"
-# define ATMEL_ID_TWI1		25	/* TWI 1 */
-# define ATMEL_BASE_FLASH	0x00200000	/* Internal FLASH */
-# define ATMEL_BASE_SRAM	0x00300000	/* Internal SRAM */
-# define ATMEL_BASE_TWI1	0xfffd8000
-# define ATMEL_BASE_EEFC	0xfffffa00
-# define ATMEL_BASE_GPBR	0xfffffd60
-#elif defined(CONFIG_AT91SAM9260)
+#if defined(CONFIG_AT91SAM9260)
 # define ATMEL_CPU_NAME		"AT91SAM9260"
 # define ATMEL_ID_USART5	25	/* USART 5 */
 # define ATMEL_BASE_SRAM0	0x00200000	/* Internal SRAM 0 */