ASoC: ad193x: Fix define of AD193X_PLL_INPUT_MASK

Current code defines AD193X_PLL_INPUT_MASK as (~0x6) which is quite
different from other MASK defines.
To make it consistent with other mask defines, define AD193X_PLL_INPUT_MASK
as 0x6 and change the code accordingly.
I think this change improves the readability.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/ad193x.c

@@ -298,7 +298,7 @@ static int ad193x_hw_params(struct snd_pcm_substream *substream,
 	}
 
 	reg = snd_soc_read(codec, AD193X_PLL_CLK_CTRL0);
-	reg = (reg & AD193X_PLL_INPUT_MASK) | master_rate;
+	reg = (reg & (~AD193X_PLL_INPUT_MASK)) | master_rate;
 	snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, reg);
 
 	reg = snd_soc_read(codec, AD193X_DAC_CTRL2);

sound/soc/codecs/ad193x.h

@@ -11,7 +11,7 @@
 
 #define AD193X_PLL_CLK_CTRL0    0x00
 #define AD193X_PLL_POWERDOWN           0x01
-#define AD193X_PLL_INPUT_MASK   (~0x6)
+#define AD193X_PLL_INPUT_MASK   0x6
 #define AD193X_PLL_INPUT_256    (0 << 1)
 #define AD193X_PLL_INPUT_384    (1 << 1)
 #define AD193X_PLL_INPUT_512    (2 << 1)