refact(light_sensor): Use new style HW locks

epicardium/modules/light_sensor.c

@@ -29,9 +29,7 @@ static int light_sensor_init()
 
 uint16_t epic_light_sensor_read()
 {
-	if (hwlock_acquire_timeout(HWLOCK_ADC, portMAX_DELAY) != 0) {
-		return 0;
-	}
+	hwlock_acquire(HWLOCK_ADC);
 
 	ADC_StartConvert(ADC_CH_7, 0, 0);
 	ADC_GetData(&last_value);
@@ -42,7 +40,7 @@ uint16_t epic_light_sensor_read()
 
 static void readAdcCallback()
 {
-	if (hwlock_acquire_timeout(HWLOCK_ADC, 0) != 0) {
+	if (hwlock_acquire_nonblock(HWLOCK_ADC) != 0) {
 		/* Can't do much about this here ... Retry next time */
 		return;
 	}
@@ -57,9 +55,7 @@ int epic_light_sensor_run()
 {
 	int ret = 0;
 
-	if (hwlock_acquire_timeout(HWLOCK_ADC, portMAX_DELAY) != 0) {
-		return -EBUSY;
-	}
+	hwlock_acquire(HWLOCK_ADC);
 
 	light_sensor_init();