[M] Change in coreboot[master]: cbmem_top_chipset: Change the return value to uintptr_t

[Jakub Czapiga (Code Review)]

Attention is currently required from: Hung-Te Lin, Philipp Hug, Matt DeVillier, Julius Werner, Angel Pons, Andrey Petrov, ron minnich, Elyes Haouas, Felix Held.

Jakub Czapiga has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/69078 )

Change subject: cbmem_top_chipset: Change the return value to uintptr_t
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Patch Set 1:

(3 comments)

File src/northbridge/intel/i440bx/memmap.c:

https://review.coreboot.org/c/coreboot/+/69078/comment/5c6fe0c9_a1ddc7fd 
PS1, Line 48: int tseg_size = 128 * KiB * (1 << (tseg >> 1));
            : 		tom -= tseg_size;
Shouldn't this be changed too? What's the purpose of integer type here? (And above too)

File src/northbridge/intel/x4x/memmap.c:

https://review.coreboot.org/c/coreboot/+/69078/comment/65e9f290_ad319f7c 
PS1, Line 76: uintptr_t top_of_ram = ALIGN_DOWN(northbridge_get_tseg_base(), 4*MiB);
            : 	return top_of_ram;
Can it fit in one line?

File src/soc/sifive/fu540/cbmem.c:

https://review.coreboot.org/c/coreboot/+/69078/comment/dd336fd3_2b8c3d2f 
PS1, Line 11: return MIN((uintptr_t)_dram + sdram_size_mb() * MiB,
            : 			   FU540_MAXDRAM);
nit: Can it fit in one line?