ios16 audiounit

Change-Id: Ida03b3544b4b55c4cd999269229b08c59bd7cac2

Author: tonychanchen

Source/LinkSDKDemo/Video/P2P/Controller/TIoTDemoPreviewDeviceVC.m

@@ -264,7 +264,7 @@ - (void)getDeviceStatusWithType:(NSString *)singleType qualityType:(NSString *)q
                 TIoTCoreAudioConfig *audio_config = [TIoTCoreAudioConfig new];
                 audio_config.refreshSession = NO;
                 audio_config.sampleRate = TIoTAVCaptionFLVAudio_16;
-                audio_config.channels = 1;
+                audio_config.channels = 2;
                 audio_config.isEchoCancel = NO;
                 audio_config.pitch =  tt_pitch; // -6声音会变粗一点;    6声音会变细一点