ASoC: Blackfin: fix typo in MUTE definition

Reported-by: NRob Maris <maris.rob@vdi.de>
Signed-off-by: NMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: NBryan Wu <cooloney@kernel.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ad73311.h

@@ -70,7 +70,7 @@
 #define REGD_IGS(x)		(x & 0x7)
 #define REGD_RMOD		(1 << 3)
 #define REGD_OGS(x)		((x & 0x7) << 4)
-#define REGD_MUTE		(x << 7)
+#define REGD_MUTE		(1 << 7)
 
 /* Control register E */
 #define CTRL_REG_E	(4 << 8)