Fix issue 2076322: AudioService, too many stream volume steps.

MAX_STREAM_VOLUME[] now contains the maximum valid index instead of the number of indexes for all stream types.
diff --git a/media/java/android/media/AudioService.java b/media/java/android/media/AudioService.java
index 0a1b142..d1b9351 100644
--- a/media/java/android/media/AudioService.java
+++ b/media/java/android/media/AudioService.java
@@ -144,16 +144,16 @@
 
    /** @hide Maximum volume index values for audio streams */
     private int[] MAX_STREAM_VOLUME = new int[] {
-        6,  // STREAM_VOICE_CALL
-        8,  // STREAM_SYSTEM
-        8,  // STREAM_RING
-        16, // STREAM_MUSIC
-        8,  // STREAM_ALARM
-        8,  // STREAM_NOTIFICATION
-        16, // STREAM_BLUETOOTH_SCO
-        8,  // STREAM_SYSTEM_ENFORCED
-        16, // STREAM_DTMF
-        16  // STREAM_TTS
+        5,  // STREAM_VOICE_CALL
+        7,  // STREAM_SYSTEM
+        7,  // STREAM_RING
+        15, // STREAM_MUSIC
+        7,  // STREAM_ALARM
+        7,  // STREAM_NOTIFICATION
+        15, // STREAM_BLUETOOTH_SCO
+        7,  // STREAM_SYSTEM_ENFORCED
+        15, // STREAM_DTMF
+        15  // STREAM_TTS
     };
     /* STREAM_VOLUME_ALIAS[] indicates for each stream if it uses the volume settings
      * of another stream: This avoids multiplying the volume settings for hidden