vbe: Record which phases loaded using VBE

We expect VPL and SPL to load using VBE. Add a record of this so we can
check it in U-Boot proper.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/bloblist.h b/include/bloblist.h
index 9684bfd..2a2f170 100644
--- a/include/bloblist.h
+++ b/include/bloblist.h
@@ -112,6 +112,7 @@
 	 */
 	BLOBLISTT_PROJECT_AREA = 0x8000,
 	BLOBLISTT_U_BOOT_SPL_HANDOFF = 0x8000, /* Hand-off info from SPL */
+	BLOBLISTT_VBE		= 0x8001,	/* VBE per-phase state */
 
 	/*
 	 * Vendor-specific tags are permitted here. Projects can be open source