MFC: r249199

Unbreak ATA_NO_48BIT_DMA with ATA_CAM by treating 48-bit DMA as an
optional property with PATA transport.

Reviewed by:	mav
MFC: r249234

Add some missing newlines and static declarations.
MFH r250595:
  The HPN patch added a new BUG bit for SSH_BUG_LARGEWINDOW
  and the update to 6.1 added SSH_BUG_DYNAMIC_RPORT with the
  same value.

  Fix the HPN SSH_BUG_LARGEWINDOW bit so it is unique.