[coreboot-gerrit] Change in coreboot[master]: mb/google/brya: Add companion device name to WWAN PCIe generic device

[Cliff Huang (Code Review)]

Attention is currently required from: Bora Guvendik, Selma Bensaid, Tim Wawrzynczak.
Cliff Huang has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62330 )

Change subject: mb/google/brya: Add companion device name to WWAN PCIe generic device
......................................................................

Patch Set 10:

(1 comment)

File src/mainboard/google/brya/variants/brya0/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/62330/comment/f5296d8e_0cc4b72f 
PS10, Line 213: rp6_wwan
> Oh wait, don't we want […]

hum... pcie_rp6 is the parent device, while wwan is the companion device, which creates 'PXSX' device. There is always parent device with a pcie generic, but not necessary have other device attaching to the same root port. The idea is to point to the device whichever create the device object, if there is one.