battery usage UI: use a fallback name for unknown components

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>

src/com/android/settings/fuelgauge/batteryusage/BatteryEntry.java

@@ -616,14 +616,10 @@ public class BatteryEntry {
                 iconId = R.drawable.ic_settings_aod;
                 break;
             default:
-                Log.w(
+                String fieldName = DebugUtils.constantToString(
-                        TAG,
+                        BatteryConsumer.class, "POWER_COMPONENT_", powerComponentId);
-                        "unknown attribute:"
+                Log.w(TAG, "unknown attribute:" + fieldName);
-                                + DebugUtils.constantToString(
+                name = context.getResources().getString(R.string.header_category_system) + " (" + fieldName + ")";
-                                        BatteryConsumer.class,
-                                        "POWER_COMPONENT_",
-                                        powerComponentId));
-                name = null;
                 iconId = R.drawable.ic_power_system;
                 break;
         }