Change in coreboot[master]: lib/prog_loaders: Add payload_preload

[Raul Rangel (Code Review)]

Hello build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/56051

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

Change subject: lib/prog_loaders: Add payload_preload
......................................................................

lib/prog_loaders: Add payload_preload

This method will allow the SoC code to start loading the payload before
it is required.

BUG=b:177909625
TEST=Boot guybrush and see read/decompress drop by 23 ms.

Signed-off-by: Raul E Rangel 
Change-Id: Ifa8f30a0f4f931ece803c2e8e022e4d33d3fe581
---
M src/include/program_loading.h
M src/include/symbols.h
M src/lib/Kconfig
M src/lib/prog_loaders.c
4 files changed, 63 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/51/56051/2