Android: Add audio stretch setting

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

@@ -121,7 +121,8 @@
     <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>
     <string name="wiimote_speaker_description">Enable sound output through the speaker on a real Wiimote (DolphinBar required).</string>
-
+    <string name="audio_stretch">Audio Stretching</string>
+    <string name="audio_stretch_description">Stretches audio to reduce stuttering. Increases latency.</string>
 
     <!-- Video Preference Fragment -->
     <string name="video_backend">Video Backend</string>