[roll] Roll fuchsia [sdhci][fidl] Add method to support vendor-specific clock configuration

Add an optional method to support vendor-specific configuration of the
internal and SD clocks. The SDHCI core driver will fall back to standard
clock configuration if this method isn't implemented.

Original-Bug: 376074123
Test: sdhci-test
Test: eMMC initialized on Sorrel
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1153233
Original-Revision: 002e48478fe04c03933ac3b235ee7f299216c941
GitOrigin-RevId: de26ea0095de07c43cf1d7d0c69dfef7faa44358
Change-Id: I671b50233bfd5a8aecd9ee586e7dc1891ce27b3c
diff --git a/stem b/stem
index bd4bccf..4760856 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="636545267f632e3f87681c4179764589490b6c8e"/>
+             revision="002e48478fe04c03933ac3b235ee7f299216c941"/>
   </projects>
   <hooks>
     <hook name="install-environment"