sh: define CONFIG_DISPLAY_BOARDINFO to print board information

All SH boards define a checkboard() function which outputs basic board
information on boot, however generic board support requires to define
CONFIG_DISPLAY_BOARDINFO to do that, so define it for the boards.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/configs/rsk7264.h b/include/configs/rsk7264.h
index 55dd2c4..ea60014 100644
--- a/include/configs/rsk7264.h
+++ b/include/configs/rsk7264.h
@@ -14,6 +14,8 @@
 #define CONFIG_CPU_SH7264	1
 #define CONFIG_RSK7264		1
 
+#define CONFIG_DISPLAY_BOARDINFO
+
 #define CONFIG_BAUDRATE		115200
 #define CONFIG_BOOTARGS		"console=ttySC3,115200"
 #define CONFIG_SYS_BAUDRATE_TABLE	{ CONFIG_BAUDRATE }