drivers: thermal: processor_thermal: Downgrade error message

Downgrade "Unsupported event" message from dev_err to dev_dbg. Otherwise it
floods with this message one some platforms.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

drivers/thermal/intel/int340x_thermal/processor_thermal_device.c

@@ -265,7 +265,7 @@ static void proc_thermal_notify(acpi_handle handle, u32 event, void *data)
 				THERMAL_DEVICE_POWER_CAPABILITY_CHANGED);
 		break;
 	default:
-		dev_err(proc_priv->dev, "Unsupported event [0x%x]\n", event);
+		dev_dbg(proc_priv->dev, "Unsupported event [0x%x]\n", event);
 		break;
 	}
 }