[roll] Roll fuchsia [clkctl][aml-clk] Implement enable/disable via clkctl

For diagnostic and debugging purposes it's sometimes useful to be able
to enable and disable clocks from the command line.

This patch adds an enable/disable interface to the clock-impl interface
and adds functionality to clkctl to manipulate that interface.

Original-Bug: 85139
Test: Started up a peripheral and disabled its clock. Observed that
the peripheral stopped sending data. Enabled the clock again and
observed that the peripheral started working again.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/586709
Original-Revision: 7ded68be2e5d92cef7b547cec8235b66c60e2908
GitOrigin-RevId: b4385dcfef16fc0b732864e90c42ef62e5bda4a1
Change-Id: Ibd5ee4d123deb33f0f79873ba9ead866cc22c3f3
diff --git a/stem b/stem
index 41033f8..78a4700 100644
--- a/stem
+++ b/stem
@@ -10,7 +10,7 @@
              githooks=""
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="915beedd3f6d95ab7d9e6d8126de8019de75f020"/>
+             revision="7ded68be2e5d92cef7b547cec8235b66c60e2908"/>
   </projects>
   <hooks>
     <hook name="install-environment"