dreamplug: switch to GENERIC_BOARD

Built and booted to a Linux prompt with no issues discovered. network and usb
access to the external mmc are ok. (my internal mmc is knackered at the h/w
level).

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-By: Prafulla Wadaskar <prafulla@marvell.com>

include/configs/dreamplug.h

@@ -37,6 +37,7 @@
 #define CONFIG_KW88F6281	1	/* SOC Name */
 #define CONFIG_MACH_TYPE	MACH_TYPE_DREAMPLUG
 #define CONFIG_SKIP_LOWLEVEL_INIT	/* disable board lowlevel_init */
+#define CONFIG_SYS_GENERIC_BOARD
 
 /*
  * Commands configuration