[coreboot-gerrit] Change in coreboot[master]: arch/x86: Use ENV_X86_64 instead of _x86_64_

[Angel Pons (Code Review)]

Attention is currently required from: Patrick Rudolph, Mariusz Szafrański, Suresh Bellampalli, Michal Motyl.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/44867 )

Change subject: arch/x86: Use ENV_X86_64 instead of _x86_64_
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Patch Set 2: Code-Review+2

(1 comment)

File src/soc/intel/denverton_ns/soc_util.c:

https://review.coreboot.org/c/coreboot/+/44867/comment/6f311bcb_3e0a7378 
PS2, Line 243: void *memcpy_s(void *dest, const void *src, size_t n)
it's dead code.