pulse default conf: support multiple audio cards (need testing)

reform2-imx8mq/template-etc/pulse/default.conf

@@ -2,7 +2,7 @@
 auto-profiles = yes
 
 [Mapping stereo-out]
-device-strings = hw:0
+device-strings = hw:%f
 fallback = yes
 channel-map = left,right
 paths-output = analog-output analog-output-speaker analog-output-headphones
@@ -10,7 +10,7 @@ direction = output
 priority = 1
 
 [Mapping headset-mono-in]
-device-strings = hw:0
+device-strings = hw:%f
 fallback = yes
 channel-map = mono
 paths-input = analog-input-reform
@@ -21,4 +21,3 @@ priority = 1
 description = MNT Reform
 output-mappings = stereo-out
 input-mappings = headset-mono-in
-