[ALSA]: Fix ioctl32 build on sparc64.

sound/core/ioctl32/ioctl32.c

@@ -22,6 +22,7 @@
 #include <sound/driver.h>
 #include <linux/smp_lock.h>
 #include <linux/time.h>
+#include <linux/init.h>
 #include <sound/core.h>
 #include <sound/control.h>
 #include <asm/uaccess.h>
@@ -393,6 +394,8 @@ static int __init snd_ioctl32_init(void)
 		return err;
 	}
 #endif
+
+	return 0;
 }
 
 module_init(snd_ioctl32_init)

sound/core/ioctl32/ioctl32.h

@@ -26,6 +26,10 @@
 #ifndef __ALSA_IOCTL32_H
 #define __ALSA_IOCTL32_H
 
+#ifndef A
+#define A(__x) ((unsigned long)(__x))
+#endif
+
 #define TO_PTR(x)  A(x)
 
 #define COPY(x)  (dst->x = src->x)