Fix sensor rail reset on Pixracer. Increase the reset duration to 50 ms to...

Fix sensor rail reset on Pixracer. Increase the reset duration to 50 ms to ensure the sensor power has bled off.

ROMFS/px4fmu_common/init.d/rc.sensors

@@ -30,7 +30,7 @@ else
 		# schematic and BOM, leading to sensor brownouts
 		# on boot. Original Pixracers following the
 		# open hardware design do not require this.
-		fmu sensor_reset 20
+		fmu sensor_reset 50
 	fi
 
 	if ms5611 -s start