Change in coreboot[master]: drivers/i2c/tpm: Add override function for TPM I2C bus

[EricR Lai (Code Review)]

Attention is currently required from: Tim Wawrzynczak, Christian Walter.
Hello Tim Wawrzynczak, Christian Walter,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/59768

to look at the new patch set (#3).

Change subject: drivers/i2c/tpm: Add override function for TPM I2C bus
......................................................................

drivers/i2c/tpm: Add override function for TPM I2C bus

Provide a way to let boards can determine which TPM bus to use
at runtime.

Signed-off-by: Eric Lai 
Change-Id: I658468ed3880de0a6b947c212fa8737956928c57
---
M src/drivers/i2c/tpm/Kconfig
M src/drivers/i2c/tpm/tis.c
M src/drivers/i2c/tpm/tis_atmel.c
M src/security/tpm/tis.h
4 files changed, 18 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/68/59768/3