Fix gpu_stats logic check

Currently we can get the load and temp stats either from the standalone
nodes or from the gpu_metrics (binary) sysfs node.

Fix the next to handle that.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>

src/overlay.cpp

@@ -662,7 +662,7 @@ void init_gpu_stats(uint32_t& vendorID, uint32_t reported_deviceID, overlay_para
       }
 
       // don't bother then
-      if (!amdgpu.busy && !amdgpu.temp && !amdgpu.vram_total && !amdgpu.vram_used) {
+      if (metrics_path.empty() && !amdgpu.busy && !amdgpu.temp && !amdgpu.vram_total && !amdgpu.vram_used) {
          params.enabled[OVERLAY_PARAM_ENABLED_gpu_stats] = false;
       }
    }