enable host_supported for libbluetooth_audio_session_aidl

Test: manual

Change-Id: Iae06114020e5bc4e41fa5caa5df5de8a186dc2ff
Signed-off-by: Yung Ti Su <andysu@google.com>
diff --git a/bluetooth/audio/aidl/Android.bp b/bluetooth/audio/aidl/Android.bp
index 16b22fe..1028fae 100644
--- a/bluetooth/audio/aidl/Android.bp
+++ b/bluetooth/audio/aidl/Android.bp
@@ -24,6 +24,7 @@
 aidl_interface {
     name: "android.hardware.bluetooth.audio",
     vendor_available: true,
+    host_supported: true,
     srcs: ["android/hardware/bluetooth/audio/*.aidl"],
     stability: "vintf",
     imports: [