[coreboot-gerrit] Change in ...coreboot[master]: tpm: Add API to query TPM presence

[Patrick Georgi (Code Review)]

Patrick Georgi has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/31898 )

Change subject: tpm: Add API to query TPM presence
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Patch Set 2:

Nitheesh, since this fell our of your patch queue, I took the liberty to repurpose it slightly:

I split out the board side handling and also moved it away from using a memory layout region of its own.

The reason was that we need the is_tpm_detected() function in the new follow up commit that decides what to do with the recovery switch.