arm: at91/configs: add libfdt to configuration

support to boot device tree Linux kernel

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
[Add libftd for at91rm9200, at91sam9263, at91sam9rl]
Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>

include/configs/at91rm9200ek.h

@@ -75,6 +75,8 @@
 
 #define CONFIG_BOARD_EARLY_INIT_F
 
+#define CONFIG_OF_LIBFDT
+
 /*
  * Memory Configuration
  */

include/configs/at91sam9260ek.h

@@ -62,6 +62,8 @@
 #define CONFIG_BOARD_EARLY_INIT_F
 #define CONFIG_DISPLAY_CPUINFO
 
+#define CONFIG_OF_LIBFDT
+
 /* general purpose I/O */
 #define CONFIG_ATMEL_LEGACY		/* required until (g)pio is fixed */
 #define CONFIG_AT91_GPIO

include/configs/at91sam9263ek.h

@@ -62,6 +62,8 @@
 
 #define CONFIG_DISPLAY_CPUINFO
 
+#define CONFIG_OF_LIBFDT
+
 /*
  * Hardware drivers
  */

include/configs/at91sam9rlek.h

@@ -48,6 +48,8 @@
 
 #define CONFIG_DISPLAY_CPUINFO
 
+#define CONFIG_OF_LIBFDT
+
 #define CONFIG_ATMEL_LEGACY
 #define CONFIG_AT91_GPIO		1
 #define CONFIG_AT91_GPIO_PULLUP		1