Change in coreboot[master]: soc/amd/picasso: Update southbridge

[Martin Roth (Code Review)]

Martin Roth has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/33770 )

Change subject: soc/amd/picasso: Update southbridge
......................................................................

Patch Set 4:

(1 comment)

https://review.coreboot.org/c/coreboot/+/33770/4/src/soc/amd/picasso/include... 
File src/soc/amd/picasso/include/soc/southbridge.h:

https://review.coreboot.org/c/coreboot/+/33770/4/src/soc/amd/picasso/include... 
PS4, Line 173: BIT(2)
Either this register is the same as last time, and it's actually a disable register or it's been updated.  Either way, we should probably comment the enable value.  If it's been changed, mention that it's opposite of stoney.