[M] Change in flashrom[master]: ichspi.c: Use mmio_W,R(ich_spibar + X) macros consistently

[Edward O'Callaghan (Code Review)]

Attention is currently required from: Felix Singer, Nico Huber, Subrata Banik.

Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/64968 )

Change subject: ichspi.c: Use mmio_W,R(ich_spibar + X) macros consistently
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Patch Set 6:

(2 comments)

Commit Message:

https://review.coreboot.org/c/flashrom/+/64968/comment/66687267_331a819c 
PS6, Line 7: ichspi.c: Use mmio_W,R(ich_spibar + X) macros consistently
> I rather would like to use the functions instead of the macros.

Same, but the point here is that future work is a lot easier with consistent code not half complete revisions of what is best.

https://review.coreboot.org/c/flashrom/+/64968/comment/73641d54_365f0b98 
PS6, Line 14: TEST=builds
> As far as I can see, the binary shouldn't change. Please make sure this is the case.

Yes, everything ends up as the same.