atheros issues with releng_8

[Zane C. B.]

With the GENERIC kernel on releng_8 and releng_8_0, I am having
issues with the Atheros wireless on my laptop.

Upon boot I am getting the message below.

ath0: <Atheros 5424/2424> irq 17 at device 0.0 on pci3
ath0: 0x10000 bytes of rid 0x10 res 3 failed (0, 0xffffffff).
ath0: cannot map register space
device_attach: ath0 attach returned 6

Any suggestions? It was working fine on releng_6.