Change in coreboot[master]: drivers/tpm: Add always-shutdown-on-suspend DSD property

[Rob Barnes (Code Review)]

Attention is currently required from: Andrey Pronin, Raul Rangel, Christian Walter, Karthik Ramasubramanian.
Rob Barnes has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59479 )

Change subject: drivers/tpm: Add always-shutdown-on-suspend DSD property
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Patch Set 2:

(2 comments)

Patchset:

PS2: 
Here's the matching kernel patch(WIP): https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/3...

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

https://review.coreboot.org/c/coreboot/+/59479/comment/db70dabd_6bf523b3 
PS2, Line 53: suspend
> Should we name this s0ix so it's not confused with S3?

Technically it can apply to both S3 and S0i3. The flag just overrides the pm_suspend_via_firmware() check in tpm_pm_suspend. Turns out pm_suspend_via_firmware is used as a proxy for is_s3_suspend, but I don't want to repeat that assumption.