ALSA: dummy - Increase MAX_PCM_SUBSTREAMS to 128

Increase the limit of PCM substreams to 128.  The default value is
unchanged; only the max accept value is increased.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>

sound/drivers/dummy.c

@@ -42,7 +42,7 @@ MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
 
 #define MAX_PCM_DEVICES		4
-#define MAX_PCM_SUBSTREAMS	16
+#define MAX_PCM_SUBSTREAMS	128
 #define MAX_MIDI_DEVICES	2
 
 #if 0 /* emu10k1 emulation */