add log-level to sofia global settings

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6760 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/autoload_configs/sofia.conf.xml

 <configuration name="sofia.conf" description="sofia Endpoint">
+  <global_settings>
+    <param name="log-level" value="0"/>
+  </global_settings>
+
   <profiles>
     <X-PRE-PROCESS cmd="include" data="../sip_profiles/*.xml"/>
   </profiles>