Corrected configuration for CMI8338/8738.

- CMI8738 is aliased to CMI8338.
- New config file for multi channel cards with -MCx suffix

src/conf/cards/CMI8738-MC6.conf

@@ -0,0 +1,80 @@
+#
+# Configuration for the CMI8738 chip with 4/6 multi-channel support
+#
+
+<confdir:pcm/front.conf>
+
+CMI8738-MC6.pcm.front.0 {
+	@args [ CARD ]
+	@args.CARD {
+		type string
+	}
+	type hw
+	card $CARD
+	device 0
+}	
+
+<confdir:pcm/rear.conf>
+
+# 2nd DAC
+# FIXME: we need a volume attenuator for rear channel.
+CMI8738-MC6.pcm.rear.0 {
+	@args [ CARD ]
+	@args.CARD {
+		type string
+	}
+	type hw
+	card $CARD
+	device 1
+}
+
+<confdir:pcm/surround40.conf>
+
+CMI8738-MC6.pcm.surround40.0 "cards.CMI8738-MC6.pcm.front.0"
+
+<confdir:pcm/surround51.conf>
+
+CMI8738-MC6.pcm.surround51.0 "cards.CMI8738-MC6.pcm.front.0"
+
+<confdir:pcm/iec958.conf>
+
+CMI8738-MC6.pcm.iec958.0 {
+	@args [ CARD DEV AES0 AES1 AES2 AES3 ]
+	@args.CARD {
+		type string
+	}
+	@args.DEV {
+		type integer
+	}
+	@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 2
+	}
+	hooks.0 {
+		type ctl_elems
+		hook_args [
+			{
+				interface PCM
+				name "IEC958 Playback PCM Stream"
+				device 2
+				lock true
+				preserve true
+				value [ $AES0 $AES1 $AES2 $AES3 ]
+			}
+		]
+	}
+}