Fix undefined mem_map in sound/core/memalloc.c

This fixes "mem_map undefined" errors in sound/core/memalloc.c (and others). I'm not sure it's the right way to do it, but it works for playing sound.

@@ -25,6 +25,7 @@
 #define __SOUND_MEMALLOC_H
 
 #include <linux/pci.h>
+#include <linux/mm.h>
 #ifdef CONFIG_SBUS
 #include <asm/sbus.h>
 #endif

Måns Rullgård
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