Change in coreboot[master]: soc/mediatek/mt8186: add SPM loader

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin.
Hello Hung-Te Lin, build bot (Jenkins), Yu-Ping Wu,

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

https://review.coreboot.org/c/coreboot/+/59341

to look at the new patch set (#3).

Change subject: soc/mediatek/mt8186: add SPM loader
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soc/mediatek/mt8186: add SPM loader

This patch adds support for loading SPM firmware from CBFS to SPM SRAM.
SPM needs its own firmware to enable SPM suspend/resume function which
turns off several resources such as DRAM/mainpll/26M clk when linux
system suspend.

TEST=program counter of SPM is correct value(0x250) after booting up
BUG=b:202871018

Signed-off-by: Rex-BC Chen 
Change-Id: Ia13e5a2ecf09561856b7e958128cd2f045c39f33
---
M src/soc/mediatek/mt8186/Kconfig
M src/soc/mediatek/mt8186/Makefile.inc
M src/soc/mediatek/mt8186/include/soc/spm.h
A src/soc/mediatek/mt8186/spm.c
4 files changed, 1,019 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/41/59341/3