Android: Update mobile and TV to use game covers

Using covers should give a consistent look to dolphin's library.

Source/Android/app/src/main/res/values/integers.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <integer name="game_grid_columns">1</integer>
+    <integer name="game_grid_columns">2</integer>
 
     <!-- Default GameCube landscape layout -->
     <integer name="BUTTON_A_X">865</integer>
@@ -81,4 +81,4 @@
     <integer name="CLASSIC_TRIGGER_L_Y">429</integer>
     <integer name="CLASSIC_TRIGGER_R_X">737</integer>
     <integer name="CLASSIC_TRIGGER_R_Y">311</integer>
-</resources>
+</resources>