Move battery usage files to a separate folder.

Bug: 202118250
Test: presubmit
Change-Id: I21aa58ebc02327849ed2161dbbafcdc806c007f2
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 44be1ef..b3cb508 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2846,7 +2846,7 @@
                 <category android:name="com.android.settings.SHORTCUT" />
             </intent-filter>
             <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
-                android:value="com.android.settings.fuelgauge.PowerUsageSummary" />
+                android:value="com.android.settings.fuelgauge.batteryusage.PowerUsageSummary" />
             <meta-data android:name="com.android.settings.HIGHLIGHT_MENU_KEY"
                        android:value="@string/menu_key_battery"/>
         </activity>