add a bootloader requirement for hikey device

Bug: 31147941
Test: build & flash
Change-Id: If0683990bca877ec93f7a84db1b7f352861f6138
diff --git a/board-info.txt b/board-info.txt
index 7c3994e..f054721 100644
--- a/board-info.txt
+++ b/board-info.txt
@@ -1 +1,2 @@
 require board=hikey
+require version-bootloader=0.4