bump to absorb workaround for rust-lang/rust#92897

bunnie · bunnie · commit 47ff229bcd5b · 2022-01-14T23:05:34.000+08:00
This only affects the simulation infrastructure, but it is a real
issue for betrusted-ec, which currently only builds under rustc-1.57.
diff --git a/deps/gateware b/deps/gateware
@@ -1 +1 @@
-Subproject commit 63545f1dbebd9458b7c14d1f92776b3a0bb7cd39
+Subproject commit 1a7736c8d8c93a745e273a4e04383c78b26ea1f8
