drm/amd/powerplay: fix fan speed show error (for hwmon pwm)

the navi asic can't get current rpm by MSG_GetCurrentRpm,
it will cause show fan rpm error, use Metrics_t to replace it.

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed