IB/mthca: Disable parity reporting

IB/mthca: Disable parity reporting

For Mellanox Tavor devices, we previously set dev->broken_parity_status,
which does not change the device's behavior; it merely prevents the EDAC
PCI error reporting from warning about Master Data Parity Error, Signaled
System Error, or Detected Parity Error for this device.

Instead, disable Parity Error Response so the device doesn't report
parity errors in the first place.

[bhelgaas: split out pci_disable_parity(), commit log, keep quirk static]
Link: https://lore.kernel.org/r/20210330174318.1289680-3-helgaas@kernel.org
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>