Change in coreboot[master]: drivers/intel/fsp2_0: Add support for FSP runs in long mode (x86_64)

[Arthur Heymans (Code Review)]

Attention is currently required from: Subrata Banik, Wonkyu Kim, Mariusz Szafrański, Jonathan Zhang, Andrey Petrov, Patrick Rudolph, Jason Glenesk, Anjaneya "Reddy" Chagam, Marshall Dawson, Johnny Lin, Tim Wawrzynczak, Christian Walter, Suresh Bellampalli, Vanessa Eusebio, Michal Motyl, Tim Chu, Felix Held.
Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59744 )

Change subject: drivers/intel/fsp2_0: Add support for FSP runs in long mode (x86_64)
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Patch Set 7:

(1 comment)

File src/drivers/intel/fsp2_0/include/fsp/info_header.h:

https://review.coreboot.org/c/coreboot/+/59744/comment/fc959eff_60d19e22 
PS6, Line 41: uint64_t
> it looks only address related parameters are changed to 64bit.
> Can we use uintptr_t instead of conditional definition?
> I think if we use uintptr_t it can work for both 32bit and 64bit.

I prefer clear fixed length types when dealing with external binary headers.