ARMV7: OMAP3: Enable cache support on Overo

Signed-off-by: Steve Sakoman <steve@sakoman.com>

include/configs/omap3_overo.h

@@ -98,6 +98,7 @@
 /* commands to include */
 #include <config_cmd_default.h>
 
+#define CONFIG_CMD_CACHE
 #define CONFIG_CMD_EXT2		/* EXT2 Support			*/
 #define CONFIG_CMD_FAT		/* FAT support			*/
 #define CONFIG_CMD_JFFS2	/* JFFS2 Support		*/