Update llvm submodule to fix function name mangling on x86 Windows

wesleywiser · wesleywiser · commit c20eebac2db5 · 2021-09-30T10:03:12.000-04:00
Fixes rust-lang#89307
diff --git a/src/llvm-project b/src/llvm-project
@@ -1 +1 @@
-Subproject commit cba558df777a045b5657d56c29944e9e8fd3a776
+Subproject commit 522c3e3d9c097b53ede7682cc28544b461597b20
