Remove warning

git-svn-id: http://subversion.jackaudio.org/jack/jack2/trunk/jackmp@1920 0c269be4-1314-0410-8aa9-9f06e86f4224

linux/freebob/JackFreebobDriver.cpp

@@ -1054,7 +1054,7 @@ extern "C"
 
         freebob_jack_settings_t cmlparams;
 
-        const char *device_name = "hw:0";
+        char *device_name = "hw:0";
 
         cmlparams.period_size_set = 0;
         cmlparams.sample_rate_set = 0;