rust: Drop libgcc dependency

Rustc unstable option "link-native-libraries" is used to prevent the
linkage of other libraries via the #[link] directive. Add a dependency
to libclang_rt.builtins, similarly to cc.

Bug: 141331117
Test: lunch aosp_crosshatch-userdebug; m
Change-Id: I5c232291a5dd08a99e6a12a1295e30bb8e4fcaf1

rust/library.go

@@ -404,7 +404,7 @@ func (library *libraryDecorator) compilerDeps(ctx DepsContext, deps Deps) Deps {
 	deps = library.baseCompiler.compilerDeps(ctx, deps)
 
 	if ctx.toolchain().Bionic() && (library.dylib() || library.shared()) {
-		deps = bionicDeps(deps, false)
+		deps = bionicDeps(ctx, deps, false)
 		deps.CrtBegin = "crtbegin_so"
 		deps.CrtEnd = "crtend_so"
 	}