Change netcfg permissions to 2750.
Fix bug 2104034.

Change-Id: I30bcc41f33623cadc63693fd54206ccbb1886a5a
diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index 0dcfcac..49fa912 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -168,7 +168,7 @@
         /* the following two files are INTENTIONALLY set-gid and not set-uid.
          * Do not change. */
     { 02755, AID_ROOT,      AID_NET_RAW,   "system/bin/ping" },
-    { 02755, AID_ROOT,      AID_INET,      "system/bin/netcfg" },
+    { 02750, AID_ROOT,      AID_INET,      "system/bin/netcfg" },
     	/* the following four files are INTENTIONALLY set-uid, but they
 	 * are NOT included on user builds. */
     { 06755, AID_ROOT,      AID_ROOT,      "system/xbin/su" },