Change in flashrom[master]: Introduce an `include` directory for header files

[Thomas Heijligen (Code Review)]

Attention is currently required from: Felix Singer, Nico Huber, Anastasia Klimchuk.
Thomas Heijligen has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/58622 )

Change subject: Introduce an `include` directory for header files
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Patch Set 6:

(2 comments)

File Makefile:

https://review.coreboot.org/c/flashrom/+/58622/comment/fad02be0_dcdedf28 
PS4, Line 994: libflashrom.h
> Needs same update as `meson.build`.

Done

File platform/endian_big.c:

https://review.coreboot.org/c/flashrom/+/58622/comment/c98bbe24_fe302f0f 
PS4, Line 18: #include "platform.h"
> These should become <platform.h> sooner or later.

Then this should be done for all includes. Is there an exact definition when to use "" and when <>?