alsa/rme96: Add missing inclusion of linux/vmalloc.h

Signed-off-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/pci/rme96.c

@@ -28,6 +28,7 @@
 #include <linux/interrupt.h>
 #include <linux/pci.h>
 #include <linux/module.h>
+#include <linux/vmalloc.h>
 
 #include <sound/core.h>
 #include <sound/info.h>