Change in coreboot[master]: ppc64/byteorder.h: define use of big endian

[Patrick Georgi (Code Review)]

Attention is currently required from: Maciej Pijanowski, Krystian Hebel, Ron Minnich.
Patrick Georgi has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55037 )

Change subject: ppc64/byteorder.h: define use of big endian
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Patch Set 1:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/55037/comment/fa14a045_3494aa67 
PS1, Line 12: configuration is changed.
> Any chance you use something before this https://github. […]

I never use the make targets, I use buildgcc directly. See ./buildgcc -h:

Platforms for GCC & GDB:
    x86_64 i386-elf i386-mingw32 riscv-elf arm aarch64
    powerpc64le-linux-gnu nds32le-elf

powerpc64le-linux-gnu.

So yes, we can, in principle support both.