[roll] Roll fuchsia [elfldltl] Add dwarf::EhFrameHdr

This provides decoding support for .eh_frame_hdr format, yielding
an easy-to-use C++ container-style API for quick lookup of FDE
addresses in .eh_frame corresponding to PC values.

Original-Bug: 318890954
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/979217
Original-Revision: ca246cfbea8a41371c5e07b93d35305e3635efde
GitOrigin-RevId: e5529d91fd810cd01b9b3230759d1a7ae40ade57
Change-Id: I50799f98174b13bb81e0427a4c1ec5b9b8418628
diff --git a/stem b/stem
index 969d1d0..d6c00b1 100644
--- a/stem
+++ b/stem
@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="a683ae5b55647e7138f74a1eb70836d82dc97efb"/>
+             revision="ca246cfbea8a41371c5e07b93d35305e3635efde"/>
   </projects>
   <hooks>
     <hook name="install-environment"