[M] Change in coreboot[master]: mb/google/rex/variants/ovis: Add USB and TCSS configuration

[Subrata Banik (Code Review)]

Attention is currently required from: Eric Lai, Jakub Czapiga, Kapil Porwal, Tarun Tuli.

Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/75578?usp=email )

Change subject: mb/google/rex/variants/ovis: Add USB and TCSS configuration
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Patch Set 10:

(2 comments)

File src/mainboard/google/rex/variants/ovis/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/75578/comment/6ecf1b7e_00cdb9d4 :
PS10, Line 137: BOTTOM, CENTER, 
IMO, the horizontal alignment could be `front/back` or 'left/center/right` and vertical alignment would be `top/center/bottom`.

I thought that u are using `horizontal, vertical, group`

https://review.coreboot.org/c/coreboot/+/75578/comment/d21aa237_8febd620 :
PS10, Line 165: ACPI_PLD_TYPE_A(FRONT, BOTTOM, ACPI_PLD_GROUP(3, 2))
need to align with patchset 10?