Stable Backport Request: iwlwifi: mvm: fix non-ACPI function

[Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>]

Hi  Stable and wireless:

I believe that Upstream Commit:

7937fd3227055892e169f4b34d21157e57d919e2
iwlwifi: mvm: fix non-ACPI function

Should be backported to 5.4-stable as iwlwifi failed to initialize
8200AC card on Loongson systems without ACPI support.

Thanks.

--
Jiaxun Yang