[roll] Roll fuchsia [uart] rename motmot uart driver to Exynos USI

No functional change except the addition of the new ZBI_KERNEL_DRIVER
define and a match against that.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1121697
Original-Revision: 184bf657671ab7dd8c8d029bcbb50409c774442c
GitOrigin-RevId: 17cc71929648e25871f1dc7daff6a88f0b5c4465
Change-Id: I80f45652108dc9e304a5a372030cdc9d9a212de9

Author: Travis Geiselbrecht

stem

@@ -11,7 +11,7 @@
              githooks="integration/git-hooks"
              remote="https://fuchsia.googlesource.com/fuchsia"
              gerrithost="https://fuchsia-review.googlesource.com"
-             revision="1288967219ab87ece1e67296a50a9c82aa81605b"/>
+             revision="184bf657671ab7dd8c8d029bcbb50409c774442c"/>
   </projects>
   <hooks>
     <hook name="install-environment"