Update CECKnownCode.patch

Added XML option 13009 for standby_pc_on_tv_standby corresponding to XBMC Quit
Set in XBMC peripheral XML:
<setting id="standby_pc_on_tv_standby" value="13009" />
to Quit XBMC when shutting off the TV
Merge pull request #3 from mihailescu2m/master

added the line to enable the XML option