ASoC: kirkwood-i2s: provide helper KIRKWOOD_RECCTL_ENABLE_MASK definition

Add a KIRKWOOD_RECCTL_ENABLE_MASK definition to complement the existing
PLAYCTL definition, and make use of it where we wish to clear both
enable bits.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/kirkwood/kirkwood.h b/sound/soc/kirkwood/kirkwood.h
index bf23afb..ab21de0 100644
--- a/sound/soc/kirkwood/kirkwood.h
+++ b/sound/soc/kirkwood/kirkwood.h
@@ -38,6 +38,9 @@
 #define KIRKWOOD_RECCTL_SIZE_24		(1<<0)
 #define KIRKWOOD_RECCTL_SIZE_32		(0<<0)
 
+#define KIRKWOOD_RECCTL_ENABLE_MASK		(KIRKWOOD_RECCTL_SPDIF_EN | \
+						 KIRKWOOD_RECCTL_I2S_EN)
+
 #define KIRKWOOD_REC_BUF_ADDR			0x1004
 #define KIRKWOOD_REC_BUF_SIZE			0x1008
 #define KIRKWOOD_REC_BYTE_COUNT			0x100C