[PATCH pata-2.6] sl82c105: add speedproc() method and MWDMA0/1 support

[Bartlomiej Zolnierkiewicz]

On Wednesday 28 March 2007, Sergei Shtylyov wrote:
> Add the speedproc() method for setting transfer modes, modify config_for_dma()
> to call it and use ide_max_dma_mode() to select the best DMA mode.
> Add support for the multiword DMA modes 0 and 1, using the upper half of the
> 'drive_data' field to store the DMA timings to program into the drive control
> register when DMA is turned on for real.
> 
> Signed-off-by: Sergei Shtylyov <sshtylyov at ru.mvista.com>

applied