[coreboot-gerrit] Change in coreboot[master]: soc/intel/tigerlake: Add CNVi Bluetooth flag at devicetree entry

[Furquan Shaikh (Code Review)]

Attention is currently required from: Bora Guvendik, Anil Kumar K, Cliff Huang, Wonkyu Kim, Bernardo Perez Priego, Srinidhi N Kaushik, Patrick Rudolph.
Furquan Shaikh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50897 )

Change subject: soc/intel/tigerlake: Add CNVi Bluetooth flag at devicetree entry
......................................................................

Patch Set 6:

(3 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/50897/comment/5d6efbd3_b9cb37b6 
PS1, Line 11: no longer PCI host
Was this dropped at some point? Or it never existed?

Commit Message:

https://review.coreboot.org/c/coreboot/+/50897/comment/17189f81_a94936a3 
PS6, Line 11: there is no longer PCI host
            : interface for BT.
no longer.. how did that change? Is there a document that captures this?

File src/soc/intel/tigerlake/fsp_params.c:

https://review.coreboot.org/c/coreboot/+/50897/comment/82f4f30f_d9f0ca29 
PS6, Line 357: CnviBtCore
Instead of adding a separate chip config for this, can we make use of PCH_DEVFN_CNVI_WIFI device to make this decision?

```
dev = pcidev_path_on_root(PCH_DEVFN_CNVI_WIFI);
if (is_dev_enabled(dev)) {
    params->CnviMode = 1;
    params->CnviBtCore = 1;
}
```

At least at this point, I don't expect to see combinations where CNVi wifi is used with BT disabled. If it is required in the future, we can always add that config at that time.