Fix AudioSystem ioConfigChanged log statement

Test: check logcat manually
Change-Id: I00850daa5dc8f52487c574ce16529b6985738c88
diff --git a/media/libaudioclient/AudioSystem.cpp b/media/libaudioclient/AudioSystem.cpp
index 481becc..1040007 100644
--- a/media/libaudioclient/AudioSystem.cpp
+++ b/media/libaudioclient/AudioSystem.cpp
@@ -577,7 +577,8 @@
         case AUDIO_INPUT_CONFIG_CHANGED: {
             sp<AudioIoDescriptor> oldDesc = getIoDescriptor_l(ioDesc->mIoHandle);
             if (oldDesc == 0) {
-                ALOGW("ioConfigChanged() modifying unknown output! %d", ioDesc->mIoHandle);
+                ALOGW("ioConfigChanged() modifying unknown %s! %d",
+                    event == AUDIO_OUTPUT_CONFIG_CHANGED ? "output" : "input", ioDesc->mIoHandle);
                 break;
             }