[coreboot-gerrit] Change in coreboot[master]: soc/amd/common: Handle power resume after power failure

[Furquan Shaikh (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Martin Roth, Marshall Dawson, Karthik Ramasubramanian, Felix Held.
Furquan Shaikh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/51924 )

Change subject: soc/amd/common: Handle power resume after power failure
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Patch Set 4: Code-Review+2

(2 comments)

File src/soc/amd/common/block/pm/Kconfig:

https://review.coreboot.org/c/coreboot/+/51924/comment/83e50872_d0a52568 
PS4, Line 5: select POWER_STATE_DEFAULT_ON_AFTER_FAILURE
nit: Probably add it as:

```
config POWER_STATE_DEFAULT_ON_AFTER_FAILURE
    default y
```

so that mainboard can override it if required.

(Reference: CB:43338)

File src/soc/amd/common/block/pm/pmlib.c:

https://review.coreboot.org/c/coreboot/+/51924/comment/802866c8_e9ef69cc 
PS4, Line 10: 0x4
nit: Use (1 << 2)? It is the same value, but I think it is easier to understand that this is referring to bit 2.