Split board-specific system properties into vendor partition

Test: building succeeded and tested on sailfish-userdebug
Bug: 35696968
Change-Id: Ia1e8013411da36583fbf0d2115c54ca5d5980e20
diff --git a/tools/vendor_buildinfo.sh b/tools/vendor_buildinfo.sh
new file mode 100755
index 0000000..2854fa8
--- /dev/null
+++ b/tools/vendor_buildinfo.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+echo "# begin build properties"
+echo "# autogenerated by vendor_buildinfo.sh"
+
+echo "ro.product.board=$TARGET_BOOTLOADER_BOARD_NAME"
+echo "ro.board.platform=$TARGET_BOARD_PLATFORM"
+
+echo "# end build properties"