[M] Change in flashrom[master]: Use chipsize_t (uint32_t) for all range types

[Evan Benn (Code Review)]

Attention is currently required from: Nico Huber, Edward O'Callaghan, Anastasia Klimchuk.

Evan Benn has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/67004 )

Change subject: Use chipsize_t (uint32_t) for all range types
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Patch Set 3:

(1 comment)

File flashrom.c:

https://review.coreboot.org/c/flashrom/+/67004/comment/d5cb7453_8aabb6bd 
PS3, Line 852: 		const chipsize_t region_start	= entry->start;
> I removed chipoff_t during this migration, as I did not understand the use case for having two types […]

I should say I dont mind adding it back or keeping chipoff_t instead of chipsize_t, but I would want to understand what the purpose is before doing it.