[coreboot] Flash ROM locking on S3 resume

[Trammell Hudson]

I'm curious why this is an option, especially since it seems almost tailor
made to re-create the Snorlax or Prince Harming vulnerabilities (VU#577140):

Flash ROM locking on S3 resume
> Don't lock ROM sections on S3 resume (LOCK_SPI_ON_RESUME_NONE) (NEW)

2. Lock all flash ROM sections on S3 resume (LOCK_SPI_ON_RESUME_RO) (NEW)
  3. Lock and disable reads all flash ROM sections on S3 resume (LOCK_SPI_ON_RESUME_NO_ACCESS) (NEW)