gn2bp: Add -Wno-ambiguous-reversed-operator flag

This is needed for icui18n

Test: m cronet_aml_components_cronet_android_cronet
Change-Id: I92fa9f6f47439f381d99588bc69caf15f4b96de5
diff --git a/tools/gn2bp/Android.bp.swp b/tools/gn2bp/Android.bp.swp
index a1fe2ad..9d2d6b7 100644
--- a/tools/gn2bp/Android.bp.swp
+++ b/tools/gn2bp/Android.bp.swp
@@ -2620,6 +2620,7 @@
     cflags: [
         "-DGOOGLE_PROTOBUF_NO_RTTI",
         "-O2",
+        "-Wno-ambiguous-reversed-operator",
         "-Wno-deprecated-non-prototype",
         "-Wno-error=return-type",
         "-Wno-macro-redefined",