Finish the pistol grip code

Change-Id: I95c03a95ac0ec64b4314ec310ad6535176b1d529
diff --git a/tools/cpp/CROSSTOOL b/tools/cpp/CROSSTOOL
index 6e0c158..bda3e1b 100644
--- a/tools/cpp/CROSSTOOL
+++ b/tools/cpp/CROSSTOOL
@@ -1013,7 +1013,7 @@
       }
       flag_group {
         iterate_over: 'system_include_paths'
-        flag: '-iquote'
+        flag: '-I'
         flag: '%{system_include_paths}'
       }
     }