Messaging verbosity backport

[Public]

Hi,

By default some laptops show this on every boot. It's not useful and was degraded to debug in a future kernel.

[drm:dp_retrieve_lttpr_cap [amdgpu]] *ERROR* dp_retrieve_lttpr_cap: Read LTTPR caps data failed.

Please backport

commit 1d925758ba1a5d2716a847903e2fd04efcbd9862 ("drm/amd/display: Reduce dmesg error to a debug print") to decrease verbosity.

Thanks,