common: Add DISPLAY_BOARDINFO

Create a Kconfig entry for DISPLAY_BOARDINFO and make it be the default
in certain architectures.  Migrate all config files.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/smdk2410_defconfig b/configs/smdk2410_defconfig
index 1cb7960..d6aa2dd 100644
--- a/configs/smdk2410_defconfig
+++ b/configs/smdk2410_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_TARGET_SMDK2410=y
 CONFIG_BOOTDELAY=5
+# CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="SMDK2410 # "
 CONFIG_CMD_USB=y