ES1938 driver
The patch ensures that a es1938 based sound card generates interrupts on
incoming MIDI events. I tested the patch successfully on an ess Solo-1 in
a AlphaPC UX/164.
Signed-off-by: Andreas Feldner <pelzi@flying-snail.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>