Change in coreboot[master]: soc/amd/picasso: Give FWM position index a default value

[Felix Held (Code Review)]

Attention is currently required from: Bao Zheng, Jason Glenesk, Marshall Dawson, Zheng Bao.
Felix Held has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49816 )

Change subject: soc/amd/picasso: Give FWM position index a default value
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Patch Set 7:

(1 comment)

File src/soc/amd/picasso/Kconfig:

https://review.coreboot.org/c/coreboot/+/49816/comment/f3ff7af9_70e161f6 
PS7, Line 364: 	default 4
this will probably hard-code AMD_FWM_POSITION_INDEX to 4 if the board doesn't override this setting. i'll try to have a closer look later