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/goflexhome_defconfig b/configs/goflexhome_defconfig
index 22e8452..8eeeafb 100644
--- a/configs/goflexhome_defconfig
+++ b/configs/goflexhome_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TARGET_GOFLEXHOME=y
 CONFIG_IDENT_STRING="\nSeagate GoFlex Home"
 CONFIG_BOOTDELAY=3
+# CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SYS_PROMPT="GoFlexHome> "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set