sound/hda: newer AMD devices still require the same PCIe snoop

So, replicate the ATI vendor snoop configuration for the AMD vendor.
I think that this should fix a number of cases where users currently
have to resort to polling or disabling MSI.

MFC after:	1 week

sys/dev/sound/pci/hda/hdac.c

@@ -197,6 +197,7 @@ static const struct {
 } hdac_pcie_snoop[] = {
 	{  INTEL_VENDORID, 0x00, 0x00, 0x00 },
 	{    ATI_VENDORID, 0x42, 0xf8, 0x02 },
+	{    AMD_VENDORID, 0x42, 0xf8, 0x02 },
 	{ NVIDIA_VENDORID, 0x4e, 0xf0, 0x0f },
 };