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/gen_android_bp b/tools/gn2bp/gen_android_bp
index f782663..62a97c3 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -1294,6 +1294,7 @@
       '-Wno-unused-parameter',
       '-Wno-deprecated-non-prototype', # needed for zlib
       '-fvisibility=hidden',
+      '-Wno-ambiguous-reversed-operator', # needed for icui18n
       '-O2',
   ]
   defaults.stl = 'none'