ARM: at91 series: convert to generic board

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/include/configs/at91sam9261ek.h b/include/configs/at91sam9261ek.h
index 226f8c1..2cc0b8b 100644
--- a/include/configs/at91sam9261ek.h
+++ b/include/configs/at91sam9261ek.h
@@ -33,6 +33,8 @@
 
 #define CONFIG_OF_LIBFDT
 
+#define CONFIG_SYS_GENERIC_BOARD
+
 #define CONFIG_ATMEL_LEGACY
 #define CONFIG_SYS_TEXT_BASE		0x21f00000