Change in coreboot[master]: Revert "Revert "drivers/intel/fsp2_0: Allow `mp_startup_all_cpus()` t...

[Nick Vaccaro (Code Review)]

Attention is currently required from: Subrata Banik, Tim Wawrzynczak, Andrey Petrov.
Hello build bot (Jenkins), Subrata Banik, Tim Wawrzynczak, Andrey Petrov,

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

https://review.coreboot.org/c/coreboot/+/62907

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

Change subject: Revert "Revert "drivers/intel/fsp2_0: Allow `mp_startup_all_cpus()` to run serially""
......................................................................

Revert "Revert "drivers/intel/fsp2_0: Allow `mp_startup_all_cpus()` to run serially""

This reverts a change that was causing hangs and exceptions during boot
on an ADL brya4es.

This reverts commit 40ca79714ad7d5f2aa201d83db4d97f21260d924.

BUG=b:224873032
TEST=`emerge-brya coreboot chromeos-bootimage`, flash and verify brya4es
is able to successfully reboot 200 times without any issues.

Change-Id: I88c15a51c5d27fbd243478c923e75962d3f8d67d
Signed-off-by: Nick Vaccaro 
---
M src/drivers/intel/fsp2_0/ppi/mp_service_ppi.c
1 file changed, 17 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/07/62907/3