Change in flashrom[master]: tests: Add tests to read from chip

[Nico Huber (Code Review)]

Attention is currently required from: Angel Pons, Anastasia Klimchuk.
Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/57326 )

Change subject: tests: Add tests to read from chip
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Patch Set 1:

(2 comments)

File tests/chip.c:

https://review.coreboot.org/c/flashrom/+/57326/comment/4ea53ca2_af3bc197 
PS1, Line 232: 16
I was really wondering what this is about... I guess you mean the
check for `16 * 1024`? i.e. >16MiB chips

https://review.coreboot.org/c/flashrom/+/57326/comment/a958f11a_cb73fd82 
PS1, Line 246: 	};
Should these be static/global so they can be shared among test functions?