pata_sis: fix MWDMA for <= UDMA66 chipsets and UDMA for UDMA33 chipsets

* Fix MWDMA timings setup in sis_old_set_dmamode() and sis_66_set_dmamode().

  The old timings were overclocked (even worse behavior than sis5513 IDE driver
  which depends on BIOS to program correct timings), the new timings are taken
  from the datasheet (they match timings from ATA spec).

* Fix UDMA timings setup in sis_old_set_dmamode().

  Misplaced pci_write_config_word() call resulted in UDMA timings never
  being set.

* Fix comments for sis_133_early_set_dmamode() and sis_133_set_dmamode():
  - only the former function handles early SiS 961 bridges
  - both functions lack MWDMA timings setup

* Fix typos in sis_100_set_piomode() and sis_133_set_piomode() comments.

* Bump driver version.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>