New config for Azalia (intel HD audio) driver

The new config file for Azalia (snd-azx), Intel HD audio driver.
For playback, softvol is applied for codecs without volume controls.

src/conf/cards/Azalia.conf

@@ -0,0 +1,108 @@
+#
+# Configuration for the Intel AZX chips
+#
+
+<confdir:pcm/front.conf>
+
+Azalia.pcm.front.0 {
+	@args [ CARD ]
+	@args.CARD {
+		type integer
+	}
+	type softvol
+	slave.pcm {
+		type hw
+		card $CARD
+		device 0
+	}
+	control {
+		name "PCM Playback Volume"
+		card $CARD
+	}
+}	
+
+# with dmix?
+Azalia.pcm.default {
+	@args [ CARD ]
+	@args.CARD {
+		type integer
+	}
+	type asym
+	playback.pcm {
+		type plug
+		slave.pcm {
+			type softvol
+			slave.pcm {
+				type hw
+				card $CARD
+				device 0
+			}
+			control {
+				name "PCM Playback Volume"
+				card $CARD
+			}
+		}
+	}
+	capture.pcm {
+		type plug
+		slave.pcm {
+			type hw
+			card $CARD
+			device 0
+		}
+	}
+}
+
+<confdir:pcm/surround40.conf>
+<confdir:pcm/surround41.conf>
+<confdir:pcm/surround50.conf>
+<confdir:pcm/surround51.conf>
+<confdir:pcm/surround71.conf>
+
+Azalia.pcm.surround40.0 cards.Azalia.pcm.front.0
+Azalia.pcm.surround51.0 cards.Azalia.pcm.front.0
+Azalia.pcm.surround71.0 cards.Azalia.pcm.front.0
+
+<confdir:pcm/iec958.conf>
+
+Azalia.pcm.iec958.0 {
+	@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
+		device 0
+	}
+	hooks.0 {
+		type ctl_elems
+		hook_args [
+			{
+				name "IEC958 Playback Default"
+				lock true
+				preserve true
+				value [ $AES0 $AES1 $AES2 $AES3 ]
+			}
+			{
+				name "IEC958 Playback Switch"
+				lock true
+				preserve true
+				value true
+			}
+		]
+	}
+}