[ALSA] ice1724: fix MIDI

The VT1724 MIDI port is not MPU-401 compatible; remove the hacks that
try to make the MPU-401 library work with it, and just use some simple
device-specific code.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Pavel Hofman <pavel.hofman@insite.cz>
diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index 7e47421..d95fbb2 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -692,7 +692,7 @@
 config SND_ICE1724
 	tristate "ICE/VT1724/1720 (Envy24HT/PT)"
 	depends on SND
-	select SND_MPU401_UART
+	select SND_RAWMIDI
 	select SND_AC97_CODEC
 	select SND_VMASTER
 	help