drm/amdgpu: prevent spurious warning

The default auto setting for kcq should not generate
a warning.

Fixes: a300de40 ("drm/amdgpu: introduce a new parameter to configure how many KCQ we want(v5)")
Reviewed-by: NKent Russell <kent.russell@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -1372,7 +1372,9 @@ static int amdgpu_device_check_arguments(struct amdgpu_device *adev)
 
 	amdgpu_gmc_tmz_set(adev);
 
-	if (amdgpu_num_kcq > 8 || amdgpu_num_kcq < 0) {
+	if (amdgpu_num_kcq == -1) {
+		amdgpu_num_kcq = 8;
+	} else if (amdgpu_num_kcq > 8 || amdgpu_num_kcq < 0) {
 		amdgpu_num_kcq = 8;
 		dev_warn(adev->dev, "set kernel compute queue number to 8 due to invalid parameter provided by user\n");
 	}