[PATCH v5] drm/amd/display: Revert W/A for hard hangs on DCN20/DCN21

[Bert Karwatzki]

I just tested patch v5 applied to amd-staging-drm-next (with HEAD
26c981e27e698c251ef3241f73ac846e66ad7fc3) and suspend and resume work
fine. But as amd-staging-drm-next is still based on linux-5.13 I had to
replace the mediatek wlan driver by the version from linux-5.16.