Skylake: TPM: Add Infineon SLB9670 SPI TPM support

This patch provides support for TPM Infineon SLB9670 by adding its
device ID to the list.

BRANCH=None
BUG=chrome-os-partner:40640
TEST=Built and test SLB9670 on SKL U Reference board Fab 2

Change-Id: I4607fc96f70175b2461b40ba61e7a821e187de40
Signed-off-by: Wenkai Du <wenkai.du@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/274053
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
diff --git a/src/drivers/pc80/tpm/tpm.c b/src/drivers/pc80/tpm/tpm.c
index 078a84d..4db01d0 100644
--- a/src/drivers/pc80/tpm/tpm.c
+++ b/src/drivers/pc80/tpm/tpm.c
@@ -130,6 +130,7 @@
 static const struct device_name infineon_devices[] = {
 	{0x000b, "SLB9635 TT 1.2"},
 	{0x001a, "SLB9660 TT 1.2"},
+	{0x001b, "SLB9670 TT 1.2"},
 	{0xffff}
 };