thermal/drivers/qcom: Demote error log of thermal zone register to debug

devm_thermal_of_zone_register() can fail with -ENODEV if thermal zone for
the channel is not represented in DT. This is perfectly fine since not all
sensors needs to be used for thermal zones but only a few in real world.

So demote the error log to debug to avoid spamming users.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20221029052933.32421-1-manivannan.sadhasivam@linaro.orgSigned-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>

drivers/thermal/qcom/qcom-spmi-adc-tm5.c

@@ -678,7 +678,7 @@ static int adc_tm5_register_tzd(struct adc_tm5_chip *adc_tm)
 						    &adc_tm5_thermal_ops);
 		if (IS_ERR(tzd)) {
 			if (PTR_ERR(tzd) == -ENODEV) {
-				dev_warn(adc_tm->dev, "thermal sensor on channel %d is not used\n",
+				dev_dbg(adc_tm->dev, "thermal sensor on channel %d is not used\n",
 					 adc_tm->channels[i].channel);
 				continue;
 			}