Change in coreboot[master]: arch/x86: Add a common romstage entry

[Arthur Heymans (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Furquan Shaikh, Marshall Dawson, Arthur Heymans, Patrick Rudolph, Felix Held.
Hello build bot (Jenkins), Jason Glenesk, Raul Rangel, Furquan Shaikh, Marshall Dawson, Patrick Rudolph, Felix Held,

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

https://review.coreboot.org/c/coreboot/+/55067

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

Change subject: arch/x86: Add a common romstage entry
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arch/x86: Add a common romstage entry

It might be possible to have this used for more than x86, but that
will be for a later commit.

Change-Id: I4968364a95b5c69c21d3915d302d23e6f1ca182f
Signed-off-by: Arthur Heymans 
---
M src/arch/x86/Makefile.inc
A src/arch/x86/romstage.c
M src/cpu/intel/car/romstage.c
M src/drivers/amd/agesa/romstage.c
A src/include/romstage_common.h
M src/soc/amd/cezanne/romstage.c
M src/soc/amd/picasso/romstage.c
M src/soc/amd/stoneyridge/romstage.c
M src/soc/example/min86/romstage.c
9 files changed, 42 insertions(+), 35 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/67/55067/2