"hdx=autotune", "hdx=noautotune":
* should be handled by host drivers needing them

"idex=autotune", "idex=noautotune":
* should die

"idex=ata66":
* should be handled by host drivers needing it

"idex=dma":
* works only for: cs5220.c, generic.c, hpt366.c, triflex.c
* DMA should be used by default

"idex=reset", "idex=serialize":
* host drivers should set these settings when needed

"idex=base[,ctl[,irq]]":
* host drivers should auto-detect correct settings
* ordering should be controlled by user-space

"ide0=four":
* should be handled by ide-generic driver
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>