Fix artics nova 7 battery level

Author: nicola02nb

src/devices/steelseries_arctis_nova_7.c

@@ -161,10 +161,16 @@ static BatteryInfo arctis_nova_7_request_battery(hid_device* device_handle)
 
     int bat = data_read[2];
 
-    if (bat > BATTERY_MAX)
+    if (bat >= BATTERY_MAX)
         info.level = 100;
+    else if (bat == 0x3)
+        info.level = 50;
+    else if (bat == 0x2)
+        info.level = 15;
+    else if (bat == 0x1)
+        info.level = 5;
     else
-        info.level = map(bat, BATTERY_MIN, BATTERY_MAX, 0, 100);
+        info.level = 0;
 
     return info;
 }