audio VTS: Use 'IN_DEFAULT' device type for telephony

This undoes the change which had happened unintentionally in
https://cs.android.com/android/_/android/platform/hardware/ \
interfaces/+/1e703f18

The device type passed to 'openInputStream' for telephony
devices should be 'AUDIO_DEVICE_IN_DEFAULT'

Bug: 259636577
Test: atest VtsHalAudioV7_0TargetTest
Test: atest VtsHalAudioV7_1TargetTest
Change-Id: Ic8f4367961346b87087c885a3cdaccab3c1407c9