Add support for:

- Curitel PC5740 Wireless Modem (Verizon's PCMCIA card)
 - Sierra MC5720 Wireless Modem (Built in to Thinkpad X60s)

PR:		98908
Submitted by:	Michael Collette <metrol@metrol.net>

sys/dev/usb/umodem.c

@@ -125,6 +125,8 @@ static const struct umodem_product {
 } umodem_products[] = {
 	/* Kyocera AH-K3001V*/
 	{ USB_VENDOR_KYOCERA, USB_PRODUCT_KYOCERA_AHK3001V, 0 },
+	{ USB_VENDOR_SIERRA, USB_PRODUCT_SIERRA_MC5720, 0 },
+	{ USB_VENDOR_CURITEL, USB_PRODUCT_CURITEL_PC5740, 0 },
 	{ 0, 0, 0 },
 };