Add support for the Oxford OX16PCI958-based card.

Note, that the patch provided with this card for the Linux states that
the card uses DEFAULT_RCLK * 2, while in fact it is '* 10'.  So probably
we should also use the subdevice/subvendord here. For now just ignore
that fact.

PR:		kern/129665
Submitted by:	bsam
Obtained from:	united efforst with bsam

sys/dev/puc/pucdata.c

@@ -632,6 +632,12 @@ const struct puc_cfg puc_pci_devices[] = {
 	    PUC_PORT_2S, 0x10, 4, 0,
 	},
 
+	{   0x1415, 0x9538, 0xffff, 0,
+	    "Oxford Semiconductor OX16PCI958 UARTs",
+	    DEFAULT_RCLK * 10,
+	    PUC_PORT_8S, 0x18, 0, 8,
+	},
+
 	{   0x14d2, 0x8010, 0xffff, 0,
 	    "VScom PCI-100L",
 	    DEFAULT_RCLK * 8,