MFC r204975,204978-204979,204981: r204975:   Enable hardware fixes for BCM5704 B0 as recommended by data sheet. r204978:   Set maximum read byte count to 2048 for PCI-X BCM5703/5704 devices.   Also disable relaxed ordering as recommended by data sheet for   PCI-X devices. For PCI-X BCM5704, set maximum outstanding split   transactions to 0 as indicated by data sheet.   For BCM5703 in PCI-X mode, DMA read watermark should be less than   or equal to maximum read byte count configuration. Enforce this   limitation in DMA read watermark configuration. r204979:   Fix typo in r204975. r204981:   Fix typo in r204978.
MFC r204975,204978-204979,204981:
r204975:
  Enable hardware fixes for BCM5704 B0 as recommended by data sheet.
r204978:
  Set maximum read byte count to 2048 for PCI-X BCM5703/5704 devices.
  Also disable relaxed ordering as recommended by data sheet for
  PCI-X devices. For PCI-X BCM5704, set maximum outstanding split
  transactions to 0 as indicated by data sheet.
  For BCM5703 in PCI-X mode, DMA read watermark should be less than
  or equal to maximum read byte count configuration. Enforce this
  limitation in DMA read watermark configuration.
r204979:
  Fix typo in r204975.
r204981:
  Fix typo in r204978.

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