[coreboot-gerrit] Change in coreboot[master]: soc/intel/common: Add romstage common stage file

[Patrick Rudolph (Code Review)]

Attention is currently required from: Furquan Shaikh, Tim Wawrzynczak, Angel Pons, Michael Niewöhner, Bernardo Perez Priego, Aaron Durbin.
Patrick Rudolph has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/37628 )

Change subject: soc/intel/common: Add romstage common stage file
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Patch Set 20:

(1 comment)

File src/soc/intel/common/basecode/romstage/romstage.c:

https://review.coreboot.org/c/coreboot/+/37628/comment/11dd8d3a_d97828a9 
PS18, Line 174: romstage_cmn_pch_init
this will be impossible to debug. Either make all __weak function empty or remove the __weak and make it mandatory to implement this function.