Android: Create didcated sections for GameCube & Wii

This align the Android UI with the desktop UI

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

@@ -120,8 +120,10 @@
     <string name="overclock_title_description">Adjusts the emulated CPU\'s clock rate if \"Override Emulated CPU Clock Speed\" is enabled.</string>
     <string name="speed_limit">Speed Limit</string>
     <string name="overclock_warning">WARNING: Changing this from the default (100%) WILL break games and cause glitches. Please do not report bugs that occur with a non-default clock.</string>
+    <string name="gamecube_submenu">GameCube</string>
     <string name="slot_a_device">GameCube Slot A Device</string>
     <string name="slot_b_device">GameCube Slot B Device</string>
+    <string name="wii_submenu">Wii</string>
     <string name="wiimote_scanning">Wii Remote Continuous Scanning</string>
     <string name="wiimote_scanning_description">Leave this on if you are using a DolphinBar for real Wiimote support.</string>
     <string name="wiimote_speaker">Wii Remote Speaker</string>