Change in coreboot[master]: bayhub bh720: Factor out common HS200 init code

[Angel Pons (Code Review)]

Attention is currently required from: Raul Rangel, Martin Roth, EricR Lai.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49833 )

Change subject: bayhub bh720: Factor out common HS200 init code
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Patch Set 1:

(1 comment)

File src/drivers/generic/bayhub/bh720.c:

https://review.coreboot.org/c/coreboot/+/49833/comment/325667cc_23d8f0d1 
PS1, Line 89: 	bh720_program_hs200_mode(dev);
> okay, use config like enable_hs200_mode in device_tree would be good. […]

Alright. The thing with `enable_hs200_mode` is that I would need to set it on all devicetrees. I'd expect that most boards will eventually use HS200 mode and only disable HS200 mode if it's unstable, so I think flipping the option to `disable_hs200_mode` would make more sense.