[roll] Roll fuchsia [docs][spi] Add drivers info

This CL adds information about drivers to be displayed at
https://fuchsia.dev/fuchsia-src/reference/hardware/drivers.

Original-Bug: 81799
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/610711
Original-Revision: 88df8e8eb7787e681c2a35fc4f70155511af224a
GitOrigin-RevId: 6bb517d6faaaa8e78860c983dcc27f805863a6aa
Change-Id: Ibb3f3db12f31cfbacc275327a10ce396ba462d9e
diff --git a/stem b/stem
index 917b56e..8bc927a 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="2d5f160555ffb69c68d05200bcafb7eb3442f21d"/>
+             revision="88df8e8eb7787e681c2a35fc4f70155511af224a"/>
   </projects>
   <hooks>
     <hook name="install-environment"