libaudio: Dock audio support

Currently this routes media to the dock, but keeps call I/O on the
device speaker.

Works with Steven Harper's Samsung dock audio patches from 2-3
months ago.

Change-Id: I41764f51f8c2df4d2f745ebdb8ada1abf0c29848

libaudio/AudioHardware.cpp

@@ -719,6 +719,7 @@ void AudioHardware::setVoiceVolume_l(float volume)
                 break;
 
             case AudioSystem::DEVICE_OUT_SPEAKER:
+            case AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET:
                 ALOGD("### speaker call volume");
                 type = SOUND_TYPE_SPEAKER;
                 break;
@@ -863,6 +864,7 @@ status_t AudioHardware::setIncallPath_l(uint32_t device)
                     break;
 
                 case AudioSystem::DEVICE_OUT_SPEAKER:
+                case AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET:
                     ALOGD("### incall mode speaker route");
                     path = SOUND_AUDIO_PATH_SPEAKER;
                     break;
@@ -1135,6 +1137,9 @@ const char *AudioHardware::getOutputRouteFromDevice(uint32_t device)
     switch (device) {
     case AudioSystem::DEVICE_OUT_EARPIECE:
         return "RCV";
+    case AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET:
+        if (mMode == AudioSystem::MODE_RINGTONE) return "RING_SPK";
+        else return "EXTRA_DOCK_SPEAKER";
     case AudioSystem::DEVICE_OUT_SPEAKER:
         if (mMode == AudioSystem::MODE_RINGTONE) return "RING_SPK";
         else return "SPK";
@@ -1146,6 +1151,7 @@ const char *AudioHardware::getOutputRouteFromDevice(uint32_t device)
         else return "HP";
     case (AudioSystem::DEVICE_OUT_SPEAKER|AudioSystem::DEVICE_OUT_WIRED_HEADPHONE):
     case (AudioSystem::DEVICE_OUT_SPEAKER|AudioSystem::DEVICE_OUT_WIRED_HEADSET):
+    case (AudioSystem::DEVICE_OUT_SPEAKER|AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET):
         if (mMode == AudioSystem::MODE_RINGTONE) return "RING_SPK_HP";
         else return "SPK_HP";
     case AudioSystem::DEVICE_OUT_BLUETOOTH_SCO:
@@ -1163,6 +1169,7 @@ const char *AudioHardware::getVoiceRouteFromDevice(uint32_t device)
     case AudioSystem::DEVICE_OUT_EARPIECE:
         return "RCV";
     case AudioSystem::DEVICE_OUT_SPEAKER:
+    case AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET:
         return "SPK";
     case AudioSystem::DEVICE_OUT_WIRED_HEADPHONE:
     case AudioSystem::DEVICE_OUT_WIRED_HEADSET: