ASoC: fsl_spdif: Improve coding style

1) Apply better indentations
2) Drop braces for single statement.
3) Use simpler ternary to reduce code.

Signed-off-by: Nicolin Chen <Guangyu.Chen@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/sound/soc/fsl/fsl_spdif.h b/sound/soc/fsl/fsl_spdif.h
index 16fde4b..b13e30e 100644
--- a/sound/soc/fsl/fsl_spdif.h
+++ b/sound/soc/fsl/fsl_spdif.h
@@ -93,6 +93,8 @@
 #define SCR_USRC_SEL_RECV		(0x1 << SCR_USRC_SEL_OFFSET)
 #define SCR_USRC_SEL_CHIP		(0x3 << SCR_USRC_SEL_OFFSET)
 
+#define SCR_DMA_xX_EN(tx)		(tx ? SCR_DMA_TX_EN : SCR_DMA_RX_EN)
+
 /* SPDIF CDText control */
 #define SRCD_CD_USER_OFFSET		1
 #define SRCD_CD_USER			(1 << SRCD_CD_USER_OFFSET)