[XS] Change in coreboot[master]: ec/google/chromeec: Use mux_conn to get the right USB port

[Kapil Porwal (Code Review)]

Attention is currently required from: Boris Mittelberg, Caveh Jalali, Eric Lai, Tarun Tuli, Tim Wawrzynczak.

Kapil Porwal has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/75824?usp=email )

Change subject: ec/google/chromeec: Use mux_conn to get the right USB port
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Patch Set 2:

(1 comment)

Commit Message:

https://review.coreboot.org/c/coreboot/+/75824/comment/dd37c78f_0b115618 :
PS2, Line 9: get_usb_port_references
> Does PLD report the port number? PLD is report the position right?

`get_usb_port_references` is using PLD.token to derive the port number. Do we know why it is not working.