re-adding slate params

Author: HaileThomas

src/slate/slate.h

@@ -41,6 +41,14 @@ typedef struct samwise_slate
     absolute_time_t entered_current_state_time;
     uint64_t time_in_current_state_ms;
 
+    /*
+     * Power Telemetry
+     */
+    uint16_t battery_voltage; // in mV (to 0.001V)
+    uint16_t battery_current; // in mA (to 0.001A)
+    uint16_t solar_voltage;   // in mV (to 0.001V)
+    uint16_t solar_current;   // in mA (to 0.001A)
+
     /*
      * Watchdog
      */