ThinkPad X31 Hotkey device

[takawata at jp.freebsd.org]

Hi, I wrote a ThinkPad Hot key device driver.
This will send hot key event for devd and 
display debug message when hot key event is
recognized.
I tested on ThinkPad X31 and 
not tested on ThinkPad i1620 but should work on it.

http://www.init-main.com/acpi_tpkey/