drivers/sensor: lis2dux12: fix temperature conversion

Return to sensor_api i/f the temperature in Celsius instead
of the register raw value in LSB.

Fixes #75686

Signed-off-by: Armando Visconti <armando.visconti@st.com>
(cherry picked from commit a1f9793)

Author: avisconti

drivers/sensor/st/lis2dux12/lis2dux12.c

@@ -221,7 +221,7 @@ static int lis2dux12_sample_fetch_temp(const struct device *dev)
 		return -EIO;
 	}
 
-	data->sample_temp = sys_le16_to_cpu(temp_data.heat.raw);
+	data->sample_temp = sys_le16_to_cpu(temp_data.heat.deg_c);
 
 	return 0;
 }
@@ -282,7 +282,7 @@ static inline int lis2dux12_get_channel(enum sensor_channel chan, struct sensor_
 		break;
 #if defined(CONFIG_LIS2DUX12_ENABLE_TEMP)
 	case SENSOR_CHAN_DIE_TEMP:
-		sensor_value_from_double(val, data->sample_temp);
+		sensor_value_from_float(val, data->sample_temp);
 		break;
 #endif
 	default:

drivers/sensor/st/lis2dux12/lis2dux12.h

@@ -55,7 +55,7 @@ struct lis2dux12_data {
 	uint8_t odr;
 
 #ifdef CONFIG_LIS2DUX12_ENABLE_TEMP
-	int sample_temp;
+	float sample_temp;
 #endif
 
 #ifdef CONFIG_LIS2DUX12_TRIGGER