ARM: at91sam9n12ek: convert to generic board support

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/include/configs/at91sam9n12ek.h b/include/configs/at91sam9n12ek.h
index 9b0e588..f02fce9 100644
--- a/include/configs/at91sam9n12ek.h
+++ b/include/configs/at91sam9n12ek.h
@@ -31,6 +31,7 @@
 #define CONFIG_DISPLAY_CPUINFO
 
 #define CONFIG_OF_LIBFDT
+#define CONFIG_SYS_GENERIC_BOARD
 
 /* general purpose I/O */
 #define CONFIG_AT91_GPIO