Create a data directory for netd and other network-related files.

Allows the 'shell' group (which is what dumpstate uses) to read the files in
this directory.

Change-Id: I69deb1a64d5d6647470823405bf0cc55b24b22de
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 62598a0..a983f29 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -251,6 +251,7 @@
     mkdir /data/misc/bluetooth 0770 system system
     mkdir /data/misc/keystore 0700 keystore keystore
     mkdir /data/misc/keychain 0771 system system
+    mkdir /data/misc/net 0750 root shell
     mkdir /data/misc/radio 0770 system radio
     mkdir /data/misc/sms 0770 system radio
     mkdir /data/misc/zoneinfo 0775 system system