powerpc: ac14xx: convert to generic board

Signed-off-by: Anatolij Gustschin <agust@denx.de>

include/configs/ac14xx.h

@@ -13,6 +13,9 @@
 #define __CONFIG_H
 
 #define CONFIG_AC14XX 1
+#define CONFIG_DISPLAY_BOARDINFO
+#define CONFIG_SYS_GENERIC_BOARD
+
 /*
  * Memory map for the ifm AC14xx board:
  *