[L] Change in coreboot[main]: cpu/x86/smm: Add save state ops for different save states

[Krystian Hebel (Code Review)]

Attention is currently required from: Arthur Heymans, Jérémy Compostella.

Krystian Hebel has posted comments on this change by Arthur Heymans. ( https://review.coreboot.org/c/coreboot/+/83064?usp=email )

Change subject: cpu/x86/smm: Add save state ops for different save states
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Patch Set 4:

(1 comment)

File src/cpu/amd/smm/amd64_save_state.c:

https://review.coreboot.org/c/coreboot/+/83064/comment/f77694e3_64bb3685?usp... :
PS4, Line 117: 0x00020064
This one doesn't have I/O Instruction Restart bit set, which in turn means that `smm_io_trap` in `amd64_apmc_node()` won't have useful data. It is used by QEMU, which is the sole reason why I couldn't use changes from this chain in CB:82558.