Convert CONFIG_SYS_CONSOLE_INFO_QUIET to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_CONSOLE_INFO_QUIET

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Make this default n, re-run the migration]
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/x600_defconfig b/configs/x600_defconfig
index a5222b3..65b7d95 100644
--- a/configs/x600_defconfig
+++ b/configs/x600_defconfig
@@ -5,6 +5,7 @@
 CONFIG_SPL_SERIAL_SUPPORT=y
 CONFIG_IDENT_STRING="-SPEAr"
 CONFIG_BOOTDELAY=3
+CONFIG_SYS_CONSOLE_INFO_QUIET=y
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SPL=y
 CONFIG_SPL_NOR_SUPPORT=y