Create DeviceDescriptorBase.

DeviceDescriptorBase is a class that derives from AudioPort and
AudioPortConfig and contains extensions to describe a audio port that is
a hardware device. DeviceDescriptor derives from DeviceDescriptorBase
and contains policy related stuff.

Test: atest AudioTrackTest AudioRecordTest AudioManagerTest
Test: atest AudioPlaybackCaptureTest AudioHostTest audiopolicy_tests
Test: audio smoke test
Bug: 135621476
Change-Id: I70ebe6bca70a77bbfc8f6855de3fd4c4ffa1c487
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.h b/services/audiopolicy/managerdefault/AudioPolicyManager.h
index f2b021a..93d67ea 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.h
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.h
@@ -646,7 +646,8 @@
         }
         String8 getFirstDeviceAddress(const DeviceVector &devices) const
         {
-            return (devices.size() > 0) ? devices.itemAt(0)->address() : String8("");
+            return (devices.size() > 0) ?
+                    String8(devices.itemAt(0)->address().c_str()) : String8("");
         }
 
         uint32_t updateCallRouting(const DeviceVector &rxDevices, uint32_t delayMs = 0);