Change in coreboot[master]: soc/amd/common/memmap: use proper type in memmap_early_dram struct

[Felix Held (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Furquan Shaikh, Marshall Dawson, Kyösti Mälkki.
Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50370 )

Change subject: soc/amd/common/memmap: use proper type in memmap_early_dram struct
......................................................................

Patch Set 1: Code-Review-1

(1 comment)

File src/soc/amd/common/block/include/amdblocks/memmap.h:

https://review.coreboot.org/c/coreboot/+/50370/comment/409a0315_ce85563b 
PS1, Line 12: 	uintptr_t base;
> At one point anything ending up in CBMEM was expected to use fixed width fields. […]

good point.
on some other patch, i wanted to use resource_t for either this or something similar, but got pushback against that. don't remember the reasoning behind that though