x86: coreboot: Enable receiving timestamps from coreboot

Bring this information into bootstage.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/coreboot_defconfig b/configs/coreboot_defconfig
index e68a3ae..881bf8d 100644
--- a/configs/coreboot_defconfig
+++ b/configs/coreboot_defconfig
@@ -11,6 +11,7 @@
 CONFIG_FIT=y
 CONFIG_FIT_SIGNATURE=y
 CONFIG_BOOTSTD_FULL=y
+CONFIG_BOOTSTAGE=y
 CONFIG_SHOW_BOOT_PROGRESS=y
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="root=/dev/sdb3 init=/sbin/init rootwait ro"
@@ -30,6 +31,7 @@
 CONFIG_BOOTP_BOOTFILESIZE=y
 CONFIG_CMD_TIME=y
 CONFIG_CMD_SOUND=y
+CONFIG_CMD_BOOTSTAGE=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_MAC_PARTITION=y
 CONFIG_ENV_OVERWRITE=y