Add support for VIA VT8251

Seems to work on IBM SurePOS 700 and
IBM (now Toshiba) AnyPlace Kiosk Model 4838-310.
Tested-by: Jason Vannest <Jason_Vannest@abercrombie.com>
Tested-by: Rowlinson Mark <Mark.Rowlinson@uk.fujitsu.com>

Corresponding to flashrom svn r1900.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

chipset_enable.c

@@ -1582,6 +1582,7 @@ const struct penable chipset_enables[] = {
 	{0x1106, 0x3147, OK,  "VIA", "VT8233A",				enable_flash_vt823x},
 	{0x1106, 0x3177, OK,  "VIA", "VT8235",				enable_flash_vt823x},
 	{0x1106, 0x3227, OK,  "VIA", "VT8237(R)",			enable_flash_vt823x},
+	{0x1106, 0x3287, OK,  "VIA", "VT8251",				enable_flash_vt823x},
 	{0x1106, 0x3337, OK,  "VIA", "VT8237A",				enable_flash_vt823x},
 	{0x1106, 0x3372, OK,  "VIA", "VT8237S",				enable_flash_vt8237s_spi},
 	{0x1106, 0x8231, NT,  "VIA", "VT8231",				enable_flash_vt823x},