ATV: match default speed settings with what we offer in the UI

VLC for Apple TV/Settings.bundle/Root.plist

@@ -18,22 +18,28 @@
 			<key>Key</key>
 			<string>playback-speed</string>
 			<key>DefaultValue</key>
-			<real>1</real>
+			<real>1.0</real>
 			<key>Titles</key>
 			<array>
+				<string>0.25x</string>
 				<string>0.50x</string>
+				<string>0.75x</string>
 				<string>1.00x</string>
+				<string>1.25x</string>
 				<string>1.50x</string>
-				<string>1.75x</string>
 				<string>2.00x</string>
+				<string>4.00x</string>
 			</array>
 			<key>Values</key>
 			<array>
+				<real>0.25</real>
 				<real>0.5</real>
-				<real>1</real>
+				<real>0.75</real>
+				<real>1.0</real>
+				<real>1.25</real>
 				<real>1.5</real>
-				<real>1.75</real>
-				<real>2</real>
+				<real>2.0</real>
+				<real>4.0</real>
 			</array>
 		</dict>
 		<dict>