mainboard/google/poppy: Add support for cr50 I2C TPM

1. Add support for using cr50 I2C TPM on poppy. This will not be
enabled until the next build.
2. Also, configure GPIOs for SPI and I2C TPM only if the corresponding
Kconfig options are set.

TEST=Verified on a reworked board that I2C TPM communication works

Change-Id: I3b293b8d410a6973a6dfea393c17d0be425b6a28
Signed-off-by: Furquan Shaikh <>
Tested-by: build bot (Jenkins) <>
Reviewed-by: Aaron Durbin <>
3 files changed