[battery] move battery update to the end of the sequence

If we don't have enough power to run *and* charge the battery then at least
some charging will be done bfore a power reset

firmware/src/data.c

@@ -30,7 +30,6 @@
 #include "hw_config.h"
 #include "analogue.h"
 #include "barometer.h"
-#include "battery.h"
 #include "gps.h"
 #include "ubx_messages.h"
 #include "telemetry.h"
@@ -110,11 +109,6 @@ struct tracker_datapoint* collect_data(void)
   datapoint.bmp180_temperature = (float)b->temperature;
 #endif
 
-  /**
-   * ---- Battery ----
-   */
-  update_battery(&datapoint);
-
 #ifdef GPS_TYPE_UBX
   /**
    * ---- GPS UBX ----

firmware/src/sequencer.c

@@ -146,4 +146,7 @@ void run_sequencer(uint32_t n, uint32_t cycle_time_s)
       record_backlog(dp);
     }
   }
+
+  /* Battery */
+  update_battery(dp);
 }