enable silent compare of parameter (#12850)

Remove false errors after comparing parameters that doesn't exists.
as described in #12832

ROMFS/px4fmu_common/init.d/rc.interface

@@ -17,9 +17,9 @@ set OUTPUT_DEV none
 # If mount (gimbal) control is enabled and output mode is AUX, set the aux
 # mixer to mount (override the airframe-specific MIXER_AUX setting).
 #
-if ! param compare MNT_MODE_IN -1
+if ! param compare -s MNT_MODE_IN -1
 then
-        if param compare MNT_MODE_OUT 0
+        if param compare -s MNT_MODE_OUT 0
         then
                 set MIXER_AUX mount
         fi

ROMFS/px4fmu_common/init.d/rc.logging

@@ -4,7 +4,7 @@
 # NOTE: Script variables are declared/initialized/unset in the rcS script.
 #
 
-if param greater UAVCAN_ENABLE 1
+if param greater -s UAVCAN_ENABLE 1
 then
 	# Reduce logger buffer to free up some RAM for UAVCAN servers.
 	set LOGGER_BUF 6

ROMFS/px4fmu_common/init.d/rc.sensors

@@ -47,13 +47,13 @@ then
 	fi
 fi
 
-if param compare SENS_EN_BATT 1
+if param compare -s SENS_EN_BATT 1
 then
 	batt_smbus start -X
 fi
 
 # Sensors on the PWM interface bank
-if param compare SENS_EN_LL40LS 1
+if param compare -s SENS_EN_LL40LS 1
 then
 	if pwm_input start
 	then
@@ -62,49 +62,49 @@ then
 fi
 
 # Lidar-Lite on I2C
-if param compare SENS_EN_LL40LS 2
+if param compare -s SENS_EN_LL40LS 2
 then
 	ll40ls start i2c -a
 fi
 
 # mappydot lidar sensor
-if param compare SENS_EN_MPDT 1
+if param compare -s SENS_EN_MPDT 1
 then
 	mappydot start -a
 fi
 
 # mb12xx sonar sensor
-if param greater SENS_EN_MB12XX 0
+if param greater -s SENS_EN_MB12XX 0
 then
 	mb12xx start -a
 fi
 
 # pga460 sonar sensor
-if param greater SENS_EN_PGA460 0
+if param greater -s SENS_EN_PGA460 0
 then
 	pga460 start
 fi
 
 # Lightware i2c lidar sensor
-if param greater SENS_EN_SF1XX 0
+if param greater -s SENS_EN_SF1XX 0
 then
 	sf1xx start -a
 fi
 
 # Heater driver for temperature regulated IMUs.
-if param compare SENS_EN_THERMAL 1
+if param compare -s SENS_EN_THERMAL 1
 then
 	heater start
 fi
 
 # Teraranger one tof sensor
-if param greater SENS_EN_TRANGER 0
+if param greater -s SENS_EN_TRANGER 0
 then
 	teraranger start -a
 fi
 
 # Possible pmw3901 optical flow sensor
-if param greater SENS_EN_PMW3901 0
+if param greater -s SENS_EN_PMW3901 0
 then
 	pmw3901 start
 fi

ROMFS/px4fmu_common/init.d/rcS

@@ -299,7 +299,7 @@ else
 	#
 	# Set USE_IO flag.
 	#
-	if param compare SYS_USE_IO 1
+	if param compare -s SYS_USE_IO 1
 	then
 		set USE_IO yes
 	fi
@@ -347,7 +347,7 @@ else
 	fi
 
 	# Sensors on the PWM interface bank.
-	if param compare SENS_EN_LL40LS 1
+	if param compare -s SENS_EN_LL40LS 1
 	then
 		# Clear pins 5 and 6.
 		set FMU_MODE pwm4
@@ -374,7 +374,7 @@ else
 	#
 	# Check if UAVCAN is enabled, default to it for ESCs.
 	#
-	if param greater UAVCAN_ENABLE 0
+	if param greater -s UAVCAN_ENABLE 0
 	then
 		# Start core UAVCAN module.
 		if uavcan start
@@ -426,7 +426,7 @@ else
 	sh /etc/init.d/rc.vehicle_setup
 
 	# Camera capture driver
-	if param greater CAM_CAP_FBACK 0
+	if param greater -s CAM_CAP_FBACK 0
 	then
 		if camera_capture start
 		then