ARM: rpi_b: enable GENERIC_BOARD

Serial port, SD card, and LCD all work.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/rpi_b.h b/include/configs/rpi_b.h
index ed8b4df..ff48598 100644
--- a/include/configs/rpi_b.h
+++ b/include/configs/rpi_b.h
@@ -20,6 +20,7 @@
 #include <linux/sizes.h>
 
 /* Architecture, CPU, etc.*/
+#define CONFIG_SYS_GENERIC_BOARD
 #define CONFIG_ARM1176
 #define CONFIG_BCM2835
 #define CONFIG_ARCH_CPU_INIT