[M] Change in coreboot[master]: security/tpm: make tis_probe() return tpm_family

[Sergii Dmytruk (Code Review)]

Attention is currently required from: Michał Żygowski, Christian Walter, Julius Werner, Krystian Hebel.

Sergii Dmytruk has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69159 )

Change subject: security/tpm: make tis_probe() return tpm_family
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Patch Set 4:

(1 comment)

File src/drivers/i2c/tpm/tpm.c:

https://review.coreboot.org/c/coreboot/+/69159/comment/b0bc58bd_bef5a0c8 
PS1, Line 461: 	*tpm_family = 1;
> OK, now I'm confused. […]

Judging by the differences in addresses they might have implemented their own protocol derived from SPI before there was one for I2C interface. They do use constants from `tis.h` for STS register, so maybe family information is there, but no guarantee for that.