[roll] Roll fuchsia [driver_manager] Create DriverLoader

DriverLoader is a small class that's responsible for looking through
the system for non-boot drivers, loading the driver, and passing
the driver back to Coordinator for binding.

Original-Bug: 69738

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/488562
Original-Revision: 5dd7ed66644db88686e09c155a56df7a1ec6dd96
GitOrigin-RevId: 6131a77c45dd294d52d9c3d290258c5d51ad8686
Change-Id: I0722062010c878a07f8a4a2de8c49b4973990809
diff --git a/stem b/stem
index 86e28b5..6073175 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="ce4fad8bb51266da1da6f81acde1c3c77b752458"/>
+             revision="5dd7ed66644db88686e09c155a56df7a1ec6dd96"/>
   </projects>
   <hooks>
     <hook name="install-environment"