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

[Sergii Dmytruk (Code Review)]

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

Sergii Dmytruk has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68991 )

Change subject: security/tpm/: turn tis_{init,open} into tis_probe
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Patch Set 2:

(1 comment)

File src/security/tpm/tss/tcg-1.2/tss.c:

https://review.coreboot.org/c/coreboot/+/68991/comment/49e13419_4a12d86c 
PS2, Line 35: tis_sendrecv
> How do we make sure this is not NULL?

Just by assuming that API is initialized before being used like the code was already doing.