Skip controller config if known device is added after startup
Skip controller config if known device is added after startup

Fix for problems like this:
http://blog.petrockblock.com/forums/topic/retropie-wont-recognize-ps3-controller-unless-ps-button-is-hit-before-es-start/
http://blog.petrockblock.com/forums/topic/elegent-method-of-detecting-wireless-controller-before-starting-es/

No controller found message pops up if no controller is connected. If a known controller is connected and any button is pressed system selection menu will show up instantly.
zigurana/EmulationStation,tbhova/EmulationStation,joolswills/EmulationStation,asmorgan24/EmulationStation-Marketplace,pimcgcd/esmod,zigurana/EmulationStation,tbhova/EmulationStation,jrassa/EmulationStation,jrassa/EmulationStation,joolswills/EmulationStation,pimcgcd/esmod,tbhova/EmulationStation,joolswills/EmulationStation,asmorgan24/EmulationStation-Marketplace,joolswills/EmulationStation,pimcgcd/esmod,jrassa/EmulationStation,jrassa/EmulationStation,zigurana/EmulationStation,asmorgan24/EmulationStation-Marketplace,asmorgan24/EmulationStation-Marketplace