Chipset support for the nVidia nForce 4.

Add pciids for the new isa bridge, and hook it to the nforce2
chipset enable.

Signed-off-by: Luc Verhaegen <libv@skynet.be>
Index: chipset_enable.c
===================================================================
--- chipset_enable.c	(revision 743)
+++ chipset_enable.c	(working copy)
@@ -1018,6 +1018,7 @@
 	{0x8086, 0x7000, OK, "Intel", "PIIX3",		enable_flash_piix4},
 	{0x8086, 0x7110, OK, "Intel", "PIIX4/4E/4M",	enable_flash_piix4},
 	{0x8086, 0x122e, OK, "Intel", "PIIX",		enable_flash_piix4},
+	{0x10de, 0x0030, NT, "NVIDIA", "nForce4/MCP4",  enable_flash_nvidia_nforce2},
 	{0x10de, 0x0050, OK, "NVIDIA", "CK804",		enable_flash_ck804}, /* LPC */
 	{0x10de, 0x0051, OK, "NVIDIA", "CK804",		enable_flash_ck804}, /* Pro */
 	{0x10de, 0x0060, OK, "NVIDIA", "NForce2",       enable_flash_nvidia_nforce2},