[M] Change in flashrom[master]: flashrom.c:Add function to get a flattened view of the chip erase blocks

[Aarya (Code Review)]

Attention is currently required from: Simon Buhrow, Nico Huber, Thomas Heijligen, Paul Menzel, Edward O'Callaghan.

Aarya has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/65879 )

Change subject: flashrom.c:Add function to get a flattened view of the chip erase blocks
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Patch Set 47:

(2 comments)

File flashrom.c:

https://review.coreboot.org/c/flashrom/+/65879/comment/681e34a0_7e17883b 
PS41, Line 1237: 
               : struct erase_layout *create_erase_layout(struct flashctx *const flashctx);
               :
> I can see what the prototypes are being used for but I don't think this is a good manner to deploy a […]

Ok so I have moved these functions to a new file `erasure_layout.c`. But later I'm bringing them back to flashrom.c as static functions.

File flashrom.c:

https://review.coreboot.org/c/flashrom/+/65879/comment/0ea545a6_7d4a3cb1 
PS42, Line 1249: index
> Maybe: […]

Done