[roll] Roll fuchsia [fidlgen_hlcpp] Annotate fully qualified FIDL name

To support the CTS effort, this CL annotates each method in
the generated HLCPP binding with the corresponding FIDL method name.
Both sources and headers are annotated to ensure coverage whether DWARF
information points to source or header files.

I made the implementation somewhat general such that we could reuse the
same machinery for LLCPP or unified bindings down the road.

Original-Fixed: 84332
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/581876
Original-Revision: 5d462c19c4a968a860c440d03130c2a3146cb5de
GitOrigin-RevId: 43970e3d8474f6852688e6c1f41dfd4a06a1f27f
Change-Id: I156038a074c9a366223c6a2a23b4a5cfd707c56b
diff --git a/stem b/stem
index 95e459d..1e9428a 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="28f917b8d04d7b7e2027b7e7cccb7c4a0143329c"/>
+             revision="5d462c19c4a968a860c440d03130c2a3146cb5de"/>
   </projects>
   <hooks>
     <hook name="install-environment"