x86: efi-x86_payload: Enable PRE_CONSOLE_BUFFER

Enable PRE_CONSOLE_BUFFER so that the full boot output can be viewed
on the video console for the EFI payload.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/efi-x86_payload32_defconfig b/configs/efi-x86_payload32_defconfig
index 7f0cab0..5b6f125 100644
--- a/configs/efi-x86_payload32_defconfig
+++ b/configs/efi-x86_payload32_defconfig
@@ -6,6 +6,8 @@
 CONFIG_FIT_SIGNATURE=y
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
+CONFIG_PRE_CONSOLE_BUFFER=y
+CONFIG_PRE_CON_BUF_ADDR=0x100000
 CONFIG_SYS_CONSOLE_INFO_QUIET=y
 CONFIG_DISPLAY_BOARDINFO_LATE=y
 CONFIG_LAST_STAGE_INIT=y