[ALSA] Fix struct size mismatch

IOCTL32 emulation
Fixed the struct size mismatch - should work on SPARC64 now, too.
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/core/ioctl32/ioctl32.c

@@ -220,7 +220,7 @@ struct sndrv_ctl_elem_value32 {
 	unsigned int indirect;	/* bit-field causes misalignment */
         union {
 		s32 integer[128];	/* integer and boolean need conversion */
-#ifdef CONFIG_PPC64
+#ifndef CONFIG_X86_64
 		s64 integer64[64];	/* for alignment */
 #endif
 		unsigned char data[512];	/* others should be compatible */