[roll] Roll fuchsia [fhcp] Add preliminary test group for driver conformance tests.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/674092
Original-Revision: a88ef3fd012d12e873a03aef880312a8e2d8ea2b
GitOrigin-RevId: 117bcd24c109769774b9f13ee84afc371d1a6b42
Change-Id: Ia89c81b8f105df9bdc5e080736c94d7864488515
diff --git a/stem b/stem
index ce58652..a4c90e3 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="b18071cbadbf57a46a877a66dfdee37b8a5a48cd"/>
+             revision="a88ef3fd012d12e873a03aef880312a8e2d8ea2b"/>
   </projects>
   <hooks>
     <hook name="install-environment"