Unfortunately not possible.
You could replace the launcher itself with another launcher or have an app set to run on startup.
* How to make Kodi (or other app) launch on startup? Go to 'My Apps' from home screen, navigate to the app you want to auto-start, and press menu button on remote. The option to 'Default start' will appear over app icon.
* Change default launcher? In some firmwares you cannot change default launcher. There are two solutions: 1. http://www.futeko.com/newforum/index.php?topic=711.msg13152#msg13152 2. Install one of the CS custom firmwares, where launcher can be changed: http://www.futeko.com/newforum/index.php?topic=812.0