variants: Heltec T114: Disable LED and GPS when powering off

This should reduce power consumption in hibernation.

Signed-off-by: Jaroslav Škarvada <jskarvad@redhat.com>

variants/heltec_t114/T114Board.h

@@ -48,6 +48,13 @@ public:
   }
 
   void powerOff() override {
+    #ifdef LED_PIN
+    digitalWrite(LED_PIN, HIGH);
+    #endif
+    #if ENV_INCLUDE_GPS == 1
+    pinMode(GPS_EN, OUTPUT);
+    digitalWrite(GPS_EN, LOW);
+    #endif
     sd_power_system_off();
   }