[S] Change in coreboot[master]: cpu/x86: Set up a separate stack for APs

[Arthur Heymans (Code Review)]

Attention is currently required from: Arthur Heymans.

Hello build bot (Jenkins),

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

https://review.coreboot.org/c/coreboot/+/69123

to look at the new patch set (#6).

Change subject: cpu/x86: Set up a separate stack for APs
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cpu/x86: Set up a separate stack for APs

APs use a lot less stack, so set up a separate stack for those in .bss.

Now that CPU_INFO_V2 is the only code path that is used, there is no
need to align stacks in c_start.S.

Change-Id: I7a681a2e3003da0400843daa5d6d6180d952abf5
Signed-off-by: Arthur Heymans 
---
M src/arch/x86/c_start.S
M src/cpu/x86/Kconfig
M src/cpu/x86/mp_init.c
3 files changed, 29 insertions(+), 7 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/23/69123/6