Change in coreboot[master]: [WIP]security/tpm: Add option to init TPM in bootblock

[Paul Menzel (Code Review)]

Attention is currently required from: Philipp Deppenwiese, Martin Roth, Christian Walter, Julius Werner, Arthur Heymans.
Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51923 )

Change subject: [WIP]security/tpm: Add option to init TPM in bootblock
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Patch Set 2:

(3 comments)

File src/security/tpm/Kconfig:

https://review.coreboot.org/c/coreboot/+/51923/comment/261c8026_860e873e 
PS2, Line 113: 	  Initialize tpm inside the bootblock instead of ramstage.
… for hardware assisted root of trust measurement.

https://review.coreboot.org/c/coreboot/+/51923/comment/2cd2233f_0b0fa6c6 
PS2, Line 113: tpm
TPM

File src/security/tpm/tspi/tspi.c:

https://review.coreboot.org/c/coreboot/+/51923/comment/f18a8fe2_968f05d2 
PS2, Line 112: 			return 1;
Use ternary operator?

return (ENV_BOOTBLOCK) ? tpm_is_setup : 1;