Create /data/dalvik-cache/profiles

Make sure /data/dalvik-cache/profiles gets the correct
permissions and SELinux context, and ownership is properly
assigned to the system UID.

Change-Id: Ic1b44009faa30d704855e97631006c4b990a4ad3

rootdir/init.rc

@@ -257,6 +257,7 @@ on post-fs-data
 
     # create dalvik-cache, so as to enforce our permissions
     mkdir /data/dalvik-cache 0771 system system
+    mkdir /data/dalvik-cache/profiles 0711 system system
 
     # create resource-cache and double-check the perms
     mkdir /data/resource-cache 0771 system system