Change in coreboot[master]: lenovo/x60: Enable TPM

[Masanori Ogino (Code Review)]

Masanori Ogino has uploaded a new patch set (#9) to the change originally created by Denis Carikli. ( https://review.coreboot.org/c/coreboot/+/13410 )

Change subject: lenovo/x60: Enable TPM
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lenovo/x60: Enable TPM

Enable the TPM device in the devicetree, and select the Kconfig option
to add the appropriate ASL code.

This is adapted from the commit below:

3d02b9c mainboard/lenovo/{t430s,t420s,t520,t530,x220}: Add TPM 1.2 mainboard support

Without that patch, coreboot doesn't touch the TPM, and, in GNU/Linux,
the TPM is not detected automatically.  It can still be used by running:

modprobe tpm_tis force=1

which initializes it. From dmesg:

tpm_tis tpm_tis: 1.2 TPM (device-id 0x3202, rev-id 5)
    tpm tpm0: A TPM error (38) occurred attempting to determine the timeouts
    tpm tpm0: Issuing TPM_STARTUP
    tpm tpm0: [Hardware Error]: Adjusting reported timeouts: A 10000->10000us B 10000->10000us C 0->750000us D 0->750000us

With this patch, the TPM is found detected automatically, and we have
the folliwing in dmesg:

tpm_tis 00:07: 1.2 TPM (device-id 0x3202, rev-id 5)
    tpm tpm0: A TPM error (38) occurred attempting to determine the timeouts
    tpm tpm0: Issuing TPM_STARTUP
    tpm tpm0: [Hardware Error]: Adjusting reported timeouts: A 10000->10000us B 10000->10000us C 0->750000us D 0->750000us

TEST=Linux 4.10.8 creates `/dev/tpm0` automatically.

Change-Id: I6e65b37507c111af1c0c56822327d5497f58f085
Signed-off-by: Denis 'GNUtoo' Carikli 
Signed-off-by: Paul Menzel 
Signed-off-by: Masanori Ogino 
---
M src/mainboard/lenovo/x60/Kconfig
M src/mainboard/lenovo/x60/devicetree.cb
2 files changed, 5 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/10/13410/9