ata on alix/geode stopped being detcted.

[Danny Braniss]

> hi,
> 	latest changes in dev/ata broke this, on older -stable> ...
> ata0-master: pio=PIO4 wdma=UNSUPPORTED udma=UNSUPPORTED cable=40 =wire
> ad0: success setting PIO4 on National chip
> ad0: 977MB <SanDisk SDCFB-1024 Rev 0.00> at ata0-master PIO4
> 
> on latest -stable:
> ata0-master: pio=PIO4 wdma=WDMA2 udma=UNSUPPORTED cable=40 wire
> 
> and no disk.
> 
> cheers,
> 	danny

problem solved:
    somehow 'device atadisk' was lost from the kernel configuration file

ata0-master: pio=PIO4 wdma=WDMA2 udma=UNSUPPORTED cable=40 wire
ad0: setting PIO4 on CS5536 chip
ad0: setting WDMA2 on CS5536 chip
ad0: 1953MB <SanDisk SDCFB-2048 HDX 3.21> at ata0-master WDMA2
ad0: 4001760 sectors [3970C/16H/63S] 4 sectors/interrupt 1 depth queue

danny