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/espt.h b/include/configs/espt.h
index e76a4ee..9475740 100644
--- a/include/configs/espt.h
+++ b/include/configs/espt.h
@@ -23,6 +23,7 @@
 #define CONFIG_BOOTARGS         "console=ttySC0,115200 root=1f01"
 #define CONFIG_ENV_OVERWRITE    1
 
+#define CONFIG_DISPLAY_BOARDINFO
 #undef  CONFIG_SHOW_BOOT_PROGRESS
 
 /* SCIF */