conf: Add card config for Intel HDMI/DP LPE audio

It's a playback-only device with a single PCM dedicated for HDMI/DP
output.  The dmix is working with the latest driver code, so enable it
for default, while providing the hdmi PCM dev for the accesses with
AES bits.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

src/conf/cards/HdmiLpeAudio.conf

@@ -0,0 +1,85 @@
+#
+# Configuration for the Intel HDMI/DP LPE audio
+#
+
+<confdir:pcm/front.conf>
+
+HdmiLpeAudio.pcm.front.0 {
+	@args [ CARD ]
+	@args.CARD {
+		type string
+	}
+	type softvol
+	slave.pcm {
+		type hw
+		card $CARD
+	}
+	control {
+		name "PCM Playback Volume"
+		card $CARD
+	}
+}
+
+# default with dmix+softvol
+HdmiLpeAudio.pcm.default {
+	@args [ CARD ]
+	@args.CARD {
+		type string
+	}
+	type plug
+	slave.pcm {
+		type softvol
+		slave.pcm {
+			@func concat
+			strings [ "dmix:" $CARD ]
+		}
+		control {
+			name "PCM Playback Volume"
+			card $CARD
+		}
+	}
+}
+
+<confdir:pcm/surround40.conf>
+<confdir:pcm/surround21.conf>
+<confdir:pcm/surround41.conf>
+<confdir:pcm/surround50.conf>
+<confdir:pcm/surround51.conf>
+
+<confdir:pcm/hdmi.conf>
+
+HdmiLpeAudio.pcm.hdmi.0 {
+	@args [ CARD AES0 AES1 AES2 AES3 ]
+	@args.CARD {
+		type string
+	}
+	@args.AES0 {
+		type integer
+	}
+	@args.AES1 {
+		type integer
+	}
+	@args.AES2 {
+		type integer
+	}
+	@args.AES3 {
+		type integer
+	}
+	type hooks
+	slave.pcm {
+		type hw
+		card $CARD
+	}
+	hooks.0 {
+		type ctl_elems
+		hook_args [
+			{
+				interface PCM
+				name "IEC958 Playback Default"
+				lock true
+				preserve true
+				value [ $AES0 $AES1 $AES2 $AES3 ]
+			}
+		]
+	}
+}

src/conf/cards/Makefile.am

@@ -30,6 +30,7 @@ cfg_files = aliases.conf \
 	FireWave.conf \
 	GUS.conf \
 	HDA-Intel.conf \
+	HdmiLpeAudio.conf \
 	ICE1712.conf \
 	ICE1724.conf \
 	ICH.conf \