android: frontend: Enlarge icon for launcher.

src/android/app/src/main/AndroidManifest.xml

@@ -19,11 +19,11 @@
     <application
         android:name=".DolphinApplication"
         android:label="@string/app_name"
-        android:icon="@drawable/ic_citra"
+        android:icon="@drawable/ic_launcher"
         android:allowBackup="true"
         android:supportsRtl="true"
         android:isGame="true"
-        android:banner="@drawable/ic_citra">
+        android:banner="@drawable/ic_launcher">
 
         <activity
             android:name=".ui.main.MainActivity"

src/android/app/src/main/res/layout/tv_title.xml

@@ -25,7 +25,7 @@
             android:id="@+id/badge"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:src="@drawable/ic_citra"/>
+            android:src="@drawable/ic_launcher"/>
 
     </RelativeLayout>
 </android.support.v17.leanback.widget.TitleView>