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

[Thomas Heijligen (Code Review)]

Attention is currently required from: Nico Huber, Paul Menzel, Edward O'Callaghan, Aarya.

Thomas Heijligen 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
......................................................................

Patch Set 42:

(1 comment)

File flashrom.c:

https://review.coreboot.org/c/flashrom/+/65879/comment/4da1c3cd_d113ddce 
PS41, Line 1237: 
               : struct erase_layout *create_erase_layout(struct flashctx *const flashctx);
               :
> Would it make sense for these functions to become part of layout. […]

These prototyes here are temporary until the functions are used. It's needed to trick -Wmissing-prototype or -Wunused-function.

erase_layout has nothing to do with the layout from layout.c