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/ib62x0_defconfig b/configs/ib62x0_defconfig
index bfeb06e..4260245 100644
--- a/configs/ib62x0_defconfig
+++ b/configs/ib62x0_defconfig
@@ -3,6 +3,7 @@
 CONFIG_TARGET_IB62X0=y
 CONFIG_IDENT_STRING=" RaidSonic ICY BOX IB-NAS62x0"
 CONFIG_BOOTDELAY=3
+# CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="ib62x0 => "
 CONFIG_CMD_BOOTZ=y