ath11k: QCA6390 on Dell XPS 13 and kernel crashes

[Stephen Liang]

For reference, I am running Fedora Rawhide kernel 5.10.0-0.rc6 with
commit 59c6d022df8efb450f82d33dd6a6812935bd022f and a revert of
7fef431be9c9 patched in.

I am able to connect to WiFi and did not receive any immediate
freezing, hard kernel panics, etc. Uptime is now going on 35 minutes
and able to get 50 up/down throughput.

I  do see a number of taints in dmesg while connecting to an access
point but the taint doesn't seem to affect functionality, for example:
https://pastebin.com/raw/gbzuvs3q

Finally, rebooting the computer does require a hard power down.