Revert "Revert "Support vendor boot""

This reverts commit 4736b0a4e4e3db03b5e23cc8f94283630b397c40.

Reason for revert: <INSERT REASONING HERE>

Change-Id: If6a10f42066429b55bad3bac307a0ed7f1e820ba
diff --git a/dtb.img b/dtb.img
new file mode 100644
index 0000000..9d6cec7
--- /dev/null
+++ b/dtb.img
@@ -0,0 +1 @@
+workaround