[Ham-Mac] Update to TS480.xml rigcat control file

[w1hkj]

Brian, KC5DEB,

Has provided the fix to the TS480 control file which corrects the PTT / 
Aux audio bug.  The new file is available at

http://www.w1hkj.com/xmls/kenwood/TS-480.xml

Thanks Brian.

73, Dave, W1HKJ