Add support for ICH9 engineering sample

Anne Le Coq <annyvonne.le_coq@alcatel-lucent.fr> reported that flashrom
didn't recognize her ICH9 LPC controller on the Green City Intel
Customer Reference Board with ICH9 + Tylersburg Chipset. According to
http://pci-ids.ucw.cz/read/PC/8086/2910

 the ID 0x8086/0x2910 was used
for engineering samples. No intel doc mentions this ID at all.

Corresponding to flashrom svn r696.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Anne Le Coq <annyvonne.le_coq@alcatel-lucent.fr>

chipset_enable.c

@@ -1012,6 +1012,7 @@ const struct penable chipset_enables[] = {
 	{0x8086, 0x2919, OK, "Intel", "ICH9M",		enable_flash_ich9},
 	{0x8086, 0x2917, OK, "Intel", "ICH9M-E",	enable_flash_ich9},
 	{0x8086, 0x2916, OK, "Intel", "ICH9R",		enable_flash_ich9},
+	{0x8086, 0x2910, OK, "Intel", "ICH9 Engineering Sample", enable_flash_ich9},
 	{0x8086, 0x1234, NT, "Intel", "MPIIX",		enable_flash_piix4},
 	{0x8086, 0x7000, OK, "Intel", "PIIX3",		enable_flash_piix4},
 	{0x8086, 0x7110, OK, "Intel", "PIIX4/4E/4M",	enable_flash_piix4},