Add Wno-ambiguous-reversed-operator to get around the operator== lookup issue in clang

Bug: b/323152930
Change-Id: Iee1bc4dd9db9a0fe38d7cf871c34abb638abc092
diff --git a/cc/config/global.go b/cc/config/global.go
index c562614..a696367 100644
--- a/cc/config/global.go
+++ b/cc/config/global.go
@@ -369,6 +369,8 @@
 		"-Wno-fortify-source",
 		"-Wno-tautological-negation-compare",
 		"-Wno-tautological-undefined-compare",
+		// http://324323434
+		"-Wno-ambiguous-reversed-operator",
 	}
 
 	llvmNextExtraCommonGlobalCflags = []string{