[ALSA] add more sequencer port type information bits

Add four new information flags SNDRV_SEQ_PORT_TYPE_HARDWARE, _SOFTWARE,
_SYNTHESIZER, _PORT for sequencer ports.  This makes it easier for apps
like Rosegarden to make policy decisions based on the port type.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/isa/gus/gus_synth.c b/sound/isa/gus/gus_synth.c
index 2767cc1..3e4d4d6 100644
--- a/sound/isa/gus/gus_synth.c
+++ b/sound/isa/gus/gus_synth.c
@@ -194,7 +194,9 @@
 						   &callbacks,
 						   SNDRV_SEQ_PORT_CAP_WRITE | SNDRV_SEQ_PORT_CAP_SUBS_WRITE,
 						   SNDRV_SEQ_PORT_TYPE_DIRECT_SAMPLE |
-						   SNDRV_SEQ_PORT_TYPE_SYNTH,
+						   SNDRV_SEQ_PORT_TYPE_SYNTH |
+						   SNDRV_SEQ_PORT_TYPE_HARDWARE |
+						   SNDRV_SEQ_PORT_TYPE_SYNTHESIZER,
 						   16, 0,
 						   name);
 	if (p->chset->port < 0) {