Change in coreboot[master]: libpayload/libc/fmap: Implement new FlashMap API

[Jakub Czapiga (Code Review)]

Attention is currently required from: Jakub Czapiga.
Hello build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/59494

to look at the new patch set (#4).

Change subject: libpayload/libc/fmap: Implement new FlashMap API
......................................................................

libpayload/libc/fmap: Implement new FlashMap API

This patch introduces new FlashMap API, the fmap_locate_area().
This function requires implementation of libpayload_boot_device_read(),
and either lib_sysinfo.fmap_cache or lib_sysinfo.fmap_offset to be set.
This function uses its own cache in RAM to limit flash reads to maximum
of two calls to libpayload_boot_device_read().

Change-Id: Idbf9016ce73aa58e17f3ee19920ab83dc6c25abb
Signed-off-by: Jakub Czapiga 
---
A payloads/libpayload/include/fmap.h
M payloads/libpayload/include/libpayload.h
M payloads/libpayload/libc/fmap.c
A payloads/libpayload/tests/include/mocks/boot_device.h
A payloads/libpayload/tests/libc/Makefile.inc
A payloads/libpayload/tests/libc/fmap_locate_area-test.c
A payloads/libpayload/tests/mocks/boot_device.c
7 files changed, 287 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/94/59494/4