AP_HAL_ChibiOS: correct include of mavlink header for analog debug

libraries/AP_HAL_ChibiOS/AnalogIn.cpp

@@ -30,11 +30,14 @@ extern AP_IOMCU iomcu;
 #include "hwdef/common/stm32_util.h"
 
 #ifndef CHIBIOS_ADC_MAVLINK_DEBUG
-#include <GCS_MAVLink/GCS_MAVLink.h>
 // this allows the first 6 analog channels to be reported by mavlink for debugging purposes
 #define CHIBIOS_ADC_MAVLINK_DEBUG 0
 #endif
 
+// MAVLink is included as we send a mavlink message as part of debug,
+// and also use the MAV_POWER flags below in update_power_flags
+#include <GCS_MAVLink/GCS_MAVLink.h>
+
 #define ANLOGIN_DEBUGGING 0
 
 // base voltage scaling for 12 bit 3.3V ADC