Let us detach ichlpcib(4) and its children.

XXX More testing is needed. I've tested this on a Dell Dimension 3000,
XXX but that system does not attach every possible device that I try to
XXX detach

Let us detach ichlpcib(4) and its children.

XXX More testing is needed. I've tested this on a Dell Dimension 3000,
XXX but that system does not attach every possible device that I try to
XXX detach with this code:

ichlpcib0 at pci0 dev 31 function 0
ichlpcib0: vendor 0x8086 product 0x24d0 (rev. 0x02)
timecounter: Timecounter "ichlpcib0" frequency 3579545 Hz quality 1000
ichlpcib0: 24-bit timer
ichlpcib0: TCO (watchdog) timer configured.
isa0 at ichlpcib0

show more ...

struct device * -> device_t, no functional changes intended.

add some common code to support the ACPI power management timer
independly of ACPI