bmc: allowing packing transport flags densely

Future transport backends can densely fill in the upper 5 bits of the
transport flag bitfield.

Signed-off-by: Benjamin Fair <benjaminfair@google.com>
Change-Id: Ie4ee59e0581e458a9020775e18270100f9a1de4e
diff --git a/bmc/test/firmware_unittest.hpp b/bmc/test/firmware_unittest.hpp
index 6bf515d..3d7fa4e 100644
--- a/bmc/test/firmware_unittest.hpp
+++ b/bmc/test/firmware_unittest.hpp
@@ -187,6 +187,8 @@
     std::uint16_t flags =
         blobs::OpenFlags::write | FirmwareFlags::UpdateFlags::ipmi;
 
+    blobs::BlobMeta expectedIdleMeta = {0xff00, 0, {}};
+
     std::vector<std::string> startingBlobs = {staticLayoutBlobId, hashBlobId};
 };