Change in flashrom[master]: tests: Add layout tests for overlapping regions

[Edward O'Callaghan (Code Review)]

Attention is currently required from: Nico Huber, Angel Pons, Anastasia Klimchuk.
Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/56324 )

Change subject: tests: Add layout tests for overlapping regions
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Patch Set 1: Code-Review+1

(1 comment)

File tests/layout.c:

https://review.coreboot.org/c/flashrom/+/56324/comment/009327ee_ce662587 
PS1, Line 21: int flashrom_layout_new(struct flashrom_layout **);
            : int flashrom_layout_add_region(struct flashrom_layout *, size_t start, size_t end, const char *name);
            : int flashrom_layout_include_region(struct flashrom_layout *, const char *name);
            : void flashrom_layout_release(struct flashrom_layout *);
> This looks a bit awkward, but... The functions are not static in layout.c. […]

what about including `libflashrom.h` will that not work?