Pixoo: Enable flashing

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/divoom/PixooCoordinator.java

@@ -65,6 +65,12 @@ public class PixooCoordinator extends AbstractBLEDeviceCoordinator {
         return R.string.devicetype_pixoo;
     }
 
+    @Override
+    public boolean supportsFlashing() {
+        // To install bitmaps
+        return true;
+    }
+
     @Override
     public boolean supportsWeather() {
         return true;