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/astro_mcf5373l_defconfig b/configs/astro_mcf5373l_defconfig
index 1e41628..94e931e 100644
--- a/configs/astro_mcf5373l_defconfig
+++ b/configs/astro_mcf5373l_defconfig
@@ -1,6 +1,7 @@
 CONFIG_M68K=y
 CONFIG_TARGET_ASTRO_MCF5373L=y
 CONFIG_BOOTDELAY=1
+# CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="URMEL > "
 CONFIG_CMD_I2C=y