drivers: sensor: fix PM Implementation for LM75 temperature sensor

fixes the driver always returning -EIO  if PM_DEVICE_RUNTIME is enabled.

Signed-off-by: Jonas Woerner <[email protected]>

drivers/sensor/lm75/lm75.c

@@ -66,11 +66,12 @@ static int lm75_sample_fetch(const struct device *dev,
 	const struct lm75_config *cfg = dev->config;
 	enum pm_device_state pm_state;
 	int ret;
+	int pm_ret;
 
-	(void)pm_device_state_get(dev, &pm_state);
-	if (pm_state != PM_DEVICE_STATE_ACTIVE) {
-		ret = -EIO;
-		return ret;
+	pm_ret = pm_device_runtime_get(dev);
+	if (pm_ret < 0) {
+		LOG_ERR("pm_device_runtime_get failed with error %i", pm_ret);
+		return pm_ret;
 	}
 
 	switch (chan) {
@@ -83,6 +84,11 @@ static int lm75_sample_fetch(const struct device *dev,
 		break;
 	}
 
+	pm_ret = pm_device_runtime_put(dev);
+	if (pm_ret < 0) {
+		LOG_ERR("pm_device_runtime_put failed with error %i", pm_ret);
+	}
+
 	return ret;
 }