Call for testers: New acpi_ibm driver

[Martin]

Works on Thinkpad R40 (model: 27225MG).

> # sysctl hw.acpi.ibm

hw.acpi.ibm.initialmask: 2060
hw.acpi.ibm.availmask: 2524
hw.acpi.ibm.events: 0
hw.acpi.ibm.eventmask: 2060
hw.acpi.ibm.hotkey: 3328
hw.acpi.ibm.lcd_brightness: 4
hw.acpi.ibm.volume: 10
hw.acpi.ibm.mute: 0
hw.acpi.ibm.thinklight: 0
hw.acpi.ibm.bluetooth: 0
hw.acpi.ibm.wlan: 1
hw.acpi.ibm.fan_rpm: 0
hw.acpi.ibm.fan_status: 0
hw.acpi.ibm.thermal: 45 48 -1 -1 -1 -1 -1 -1

--
Martin