Change in coreboot[master]: cbfs: Add unverified_area APIs

[Julius Werner (Code Review)]

Attention is currently required from: Raul Rangel, Jakub Czapiga.
Hello Raul Rangel, Jakub Czapiga,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/59678

to look at the new patch set (#2).

Change subject: cbfs: Add unverified_area APIs
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cbfs: Add unverified_area APIs

This patch adds a new ..._unverified_area_... group of functions to the
cbfs_map/_load/_alloc() APIs. These functions can be used to access
custom FMAP sections and are meant to replace the existing
cbfs_locate_file_in_region(). The name is intended to highlight that
accesses through this API will not be verified when CBFS_VERIFICATION is
enabled and should always be treated as if they may return malicious
data. (Due to laziness I'm not adding the combination of this API with
the ..._type_... variant at this point, since it seems very unlikely
that we'll ever have a use case for that. If we ever do, it should be
easy to add later.)

(Also remove the 'inline' from cbfs_file_hash_mismatch(). I'm not sure
why I put it there in the first place, probably a bad copy&paste.)

Signed-off-by: Julius Werner 
Change-Id: I402265900f7075aa0c2f58d812c67ea63ddf2900
---
M src/include/cbfs.h
M src/lib/cbfs.c
2 files changed, 151 insertions(+), 78 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/78/59678/2