Change in coreboot[master]: mb/google/brya/var/felwinter: Swap TPM and touchscreen I2C bus

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Paul Menzel, EricR Lai.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59799 )

Change subject: mb/google/brya/var/felwinter: Swap TPM and touchscreen I2C bus
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Patch Set 1: Code-Review+2

(1 comment)

File src/mainboard/google/brya/variants/felwinter/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/59799/comment/41135934_4b88d2f3 
PS1, Line 68: 	}"
> That seems to do more than the commit message summary says? (More than just swapping the busses?)

Since the I2C bus information changed, this common SoC config can't be derived from the baseboard anymore, so it has to be moved here as well.