vboot: Add screens for recovery using disk

Add VB2_SCREEN_RECOVERY_DISK_STEP* to enum vb2_screen.

BRANCH=none
BUG=b:146399181
TEST=USE="menu_ui" emerge-nami depthcharge

Change-Id: Ibfaeb25d00ee340adfb9f7de9188f20a947bae24
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2156701
Reviewed-by: Joel Kitching <kitching@chromium.org>
diff --git a/firmware/2lib/include/2api.h b/firmware/2lib/include/2api.h
index 947770a..13d24ca 100644
--- a/firmware/2lib/include/2api.h
+++ b/firmware/2lib/include/2api.h
@@ -1177,6 +1177,10 @@
 	VB2_SCREEN_RECOVERY_BROKEN		= 0x110,
 	/* First recovery screen to select recovering from disk or phone */
 	VB2_SCREEN_RECOVERY_SELECT		= 0x200,
+	/* Recovery using disk */
+	VB2_SCREEN_RECOVERY_DISK_STEP1		= 0x210,
+	VB2_SCREEN_RECOVERY_DISK_STEP2		= 0x211,
+	VB2_SCREEN_RECOVERY_DISK_STEP3		= 0x212,
 };
 
 /**