Add i631x LPC support

Corresponding to flashrom svn r371 and coreboot v2 svn r3848.
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>

chipset_enable.c

@@ -880,6 +880,7 @@ static const FLASH_ENABLE enables[] = {
 	{0x8086, 0x24cc, "Intel ICH4-M",	enable_flash_ich_4e},
 	{0x8086, 0x24d0, "Intel ICH5/ICH5R",	enable_flash_ich_4e},
 	{0x8086, 0x25a1, "Intel 6300ESB",	enable_flash_ich_4e},
+	{0x8086, 0x2670, "Intel 631xESB/632xESB/3100",    enable_flash_ich_dc},
 	{0x8086, 0x2640, "Intel ICH6/ICH6R",	enable_flash_ich_dc},
 	{0x8086, 0x2641, "Intel ICH6-M",	enable_flash_ich_dc},
 	{0x8086, 0x5031, "Intel EP80579",	enable_flash_ich7},