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/mx28evk_nand_defconfig b/configs/mx28evk_nand_defconfig
index af35c49..0980045 100644
--- a/configs/mx28evk_nand_defconfig
+++ b/configs/mx28evk_nand_defconfig
@@ -7,6 +7,7 @@
 CONFIG_SYS_EXTRA_OPTIONS="ENV_IS_IN_NAND"
 CONFIG_BOOTDELAY=1
 CONFIG_VERSION_VARIABLE=y
+# CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y