rcS tone_alarm: fix CBRK_BUZZER

tone_alarm was started before the parameters were loaded, and the first
tune was played before that as well. CBRK_BUZZER was then read as default,
ignoring the user-configured value.

We now start tone_alarm after we load the parameters. Note that a
previously published startup tone or SD card error will still be played.

ROMFS/px4fmu_common/init.d/rcS

@@ -79,11 +79,6 @@ ver all
 #
 uorb start
 
-#
-# Start the tone_alarm driver.
-#
-tone_alarm start
-
 #
 # Try to mount the microSD card.
 #
@@ -173,6 +168,13 @@ else
 		param reset
 	fi
 
+	#
+	# Start the tone_alarm driver.
+	# Needs to be started after the parameters are loaded (for CBRK_BUZZER).
+	# Note that this will still play the already published startup tone.
+	#
+	tone_alarm start
+
 	#
 	# Start system state indicator.
 	#