If you're using 2.6.32 or later, you should be able to fidget with the contents of the force_release file in /sys to add the appropriate keycodes. The exact values can be found by experimentation, and you can add something to /etc/rc.local to set it on startup if you like (changes will not persist across startup).
If you're using 2.6.32 or later, you should be able to fidget with the contents of the force_release file in /sys to add the appropriate keycodes. The exact values can be found by experimentation, and you can add something to /etc/rc.local to set it on startup if you like (changes will not persist across startup).