Add PCI ID for AMT based serial interface found on the Lenovo T61.

uart2: <Intel AMT - PM965/GM965 KT Controller> port 0x1830-0x1837
	mem 0xfe024000-0xfe024fff irq 17 at device 3.3 on pci0
uart2: console (115200,n,8,1)

Tested as tty and serial console.  Seems "fine"