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/cobra5272_defconfig b/configs/cobra5272_defconfig
index 400fca0..bd20de8 100644
--- a/configs/cobra5272_defconfig
+++ b/configs/cobra5272_defconfig
@@ -2,6 +2,7 @@
 CONFIG_TARGET_COBRA5272=y
 CONFIG_SYS_TEXT_BASE=0xffe00000
 CONFIG_BOOTDELAY=5
+# CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SYS_PROMPT="COBRA > "
 # CONFIG_CMD_LOADB is not set
 # CONFIG_CMD_LOADS is not set