[L] Change in coreboot[master]: security/tpm/: turn tis_{init,open} into tis_probe

[Michał Żygowski (Code Review)]

Attention is currently required from: Sergii Dmytruk.

Michał Żygowski has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68991?usp=email )

Change subject: security/tpm/: turn tis_{init,open} into tis_probe
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Patch Set 6:

(1 comment)

File src/security/tpm/tss/tcg-2.0/tss.c:

https://review.coreboot.org/c/coreboot/+/68991/comment/8c86d807_aa1797a6 :
PS6, Line 32: 		die("TSS 2.0 wasn't initialized\n");
> It boots fine after reverting this change. Thanks Sergii for the due diligence. […]

Can't we just return NULL? If TPM command could nto be processed that is not such a big deal to halt the platform. Instead the caller should handle eventual error path