exynos: audiohal: Add support for VOIP_TX input flag

* Required for btsco in VoIP calls on exynos9610

Change-Id: I4d2264e9d5a4d85a24fdbd1ce95814f29423fb24
diff --git a/libaudio/audiohal/audio_hw.c b/libaudio/audiohal/audio_hw.c
index a3d832f..fa2a5d2 100644
--- a/libaudio/audiohal/audio_hw.c
+++ b/libaudio/audiohal/audio_hw.c
@@ -3960,9 +3960,9 @@
             in->common.stream_usage = AUSAGE_HOTWORD_RECORD;
             ALOGD("device-%s: Requested to open VTS Record input", __func__);
         }
-    } else if (flags == AUDIO_INPUT_FLAG_NONE)
+    } else if (flags == AUDIO_INPUT_FLAG_NONE || (flags & AUDIO_INPUT_FLAG_VOIP_TX) != 0)
 #else
-    if (flags == AUDIO_INPUT_FLAG_NONE)
+    if (flags == AUDIO_INPUT_FLAG_NONE || (flags & AUDIO_INPUT_FLAG_VOIP_TX) != 0)
 #endif
     {
       if (isCPCallMode(adev) &&