[S] Change in coreboot[main]: mb/google/brox: Set TPM i2c config in device tree

[Karthik Ramasubramanian (Code Review)]

Attention is currently required from: Eric Lai, Ivy Jian, Nick Vaccaro, Shelley Chen.

Karthik Ramasubramanian has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/79101?usp=email )

Change subject: mb/google/brox: Set TPM i2c config in device tree
......................................................................

Patch Set 4:

(2 comments)

File src/mainboard/google/brox/variants/baseboard/brox/devicetree.cb:

https://review.coreboot.org/c/coreboot/+/79101/comment/9470c632_0022fb99 :
PS4, Line 107: .early_init = 1,
Now that GSC is in I2C4, this should be for i2c[4].

https://review.coreboot.org/c/coreboot/+/79101/comment/e89ff4a0_41510cd0 :
PS4, Line 169: device ref i2c3 on end
Can be removed, not that nothing is in I2C3.