[coreboot-gerrit] Change in coreboot[master]: [TEST] Add support for link time optimization

[Paul Menzel (Code Review)]

Paul Menzel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/38989 )

Change subject: [TEST] Add support for link time optimization
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Patch Set 6:

Any idea how to fix the error below for AGESA boards like ASRock E350M1?

```
    LINK       cbfs/fallback/romstage.debug
/opt/xgcc/lib/gcc/i386-elf/8.3.0/../../../../i386-elf/bin/ld.bfd: section .illegal_globals VMA wraps around address space
collect2: error: ld returned 1 exit status
```