Change in coreboot[master]: soc/intel/common/tcss: Optimize USB-C DP flow and code structure

[Derek Huang (Code Review)]

Attention is currently required from: Furquan Shaikh, Paul Menzel, Tim Wawrzynczak, Curtis Chen, Brandon Breitenstein.
Derek Huang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/57139 )

Change subject: soc/intel/common/tcss: Optimize USB-C DP flow and code structure
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Patch Set 21:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/57139/comment/8491af68_363cd10e 
PS20, Line 8:
> Please describe the problem first.

Done

https://review.coreboot.org/c/coreboot/+/57139/comment/b88b6be2_e769b3d3 
PS20, Line 11:
> Please paste the new log messages, which should be shown now, and say, what exact device you tested  […]

Done

File src/soc/intel/common/block/tcss/tcss.c:

https://review.coreboot.org/c/coreboot/+/57139/comment/f4837c34_02530779 
PS19, Line 313: get_mux_info
> If `wait_for_hpd()` is successful, does it not guarantee that the MUX is configured in DP mode? Is t […]

Agree that if `wait_for_hpd()` is successful, it guarantee that the mux is configured in DP. Removed the additional check.