Skinny: fix reversed device reset from CLI.

Existing code would do a full device restart when "skinny reset device"
was entered at the CLI and do a reset when "skinny reset device restart"
entered. 
........

Merged revisions 405893 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@405894 65c4cc65-6c06-0410-ace0-fbb531ad65f3