[S] Change in flashrom[master]: flashrom.c:Add function to align region to sector boundaries

[Edward O'Callaghan (Code Review)]

Attention is currently required from: Aarya.

Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/65642 )

Change subject: flashrom.c:Add function to align region to sector boundaries
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Patch Set 74:

(1 comment)

Commit Message:

https://review.coreboot.org/c/flashrom/+/65642/comment/15a1da24_d67f6188 
PS74, Line 7: flashrom.c:Add function to align region to sector boundaries
            : 
            : Add a function to align start and end address of the region (in struct
            : walk_info) to some erase sector boundaries and modify the region start
            : and end addresses to match nearest erase sector boundaries. This
            : function will be used in the new algorithm for erase function selection.
just document the function with Doxygen and squash into the previous patch.