Merge branch 'll40ls_startup' of https://github.com/mhkabir/Firmware into mhkabir-ll40ls_startup

Conflicts:
	ROMFS/px4fmu_common/init.d/rc.sensors

ROMFS/px4fmu_common/init.d/rc.sensors

@@ -115,12 +115,15 @@ if px4flow start
 then
 fi
 
-if pwm_input start
+if param compare SENS_ENABLE_LL40LS 1
 then
-fi
+	if pwm_input start
+	then
+	fi
 	
-if ll40ls start pwm
-then
+	if ll40ls start pwm
+	then
+	fi
 fi
 
 #

src/modules/sensors/sensor_params.c

@@ -1401,3 +1401,12 @@ PARAM_DEFINE_INT32(RC_RSSI_PWM_MAX, 1000);
  *
  */
 PARAM_DEFINE_INT32(RC_RSSI_PWM_MIN, 2000);
+
+/**
+ * Enable Lidar-Lite (LL40LS) pwm driver
+ *
+ * @min 0
+ * @max 1
+ * @group Sensor Enable
+ */
+PARAM_DEFINE_INT32(SENS_ENABLE_LL40LS, 0);