test-case/check-alsabat.sh: Select the first card for amixer contents

Signed-off-by: Hariprasad, Rajendra <hariprasad.rajendra@intel.com>

Author: harajend

test-case/check-alsabat.sh

@@ -123,9 +123,11 @@ alsabat -P$pcm_p --standalone -n $frames -c $channel_p -r $rate -f $format -F $f
 # playback may have low latency, add one second delay to aviod recording zero at beginning.
 sleep 1
 
+# Select the first card
+first_card_name=$(aplay -l | awk 'NR == 2 {print $3}')
 # dump amixer contents always.
 # Good case amixer settings is for reference, bad case for debugging.
-amixer contents > "$LOG_ROOT"/amixer_settings.txt
+amixer -c $first_card_name contents > "$LOG_ROOT"/amixer_settings.txt
 
 # We use different USB sound cards in CI, part of them only support 1 channel for capture,
 # so make the channel as an option and config it in alsabat-playback.csv