Change in coreboot[master]: soc/mediatek: Initialize SSPM

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin, Rex-BC Chen, Paul Menzel.
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/+/55051

to look at the new patch set (#8).

Change subject: soc/mediatek: Initialize SSPM
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soc/mediatek: Initialize SSPM

Load SSPM firmware and boot up SSPM in ramstage.
This adds 23ms to the boot time.

TEST=Load SSPM blob ok, and we can see some logs of SSPM from AP.

Signed-off-by: Rex-BC Chen 
Change-Id: Ia227ea9f7d58129068cb36ec2de7d9feb677006b
---
M src/soc/mediatek/mt8195/Kconfig
M src/soc/mediatek/mt8195/Makefile.inc
M src/soc/mediatek/mt8195/soc.c
3 files changed, 11 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/51/55051/8