AsoC: wm9081: Use IS_ENABLED() macro

Using the IS_ENABLED() macro can make the code shorter and simpler.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

sound/soc/codecs/wm9081.c

@@ -1326,7 +1326,7 @@ static const struct regmap_config wm9081_regmap = {
 	.cache_type = REGCACHE_RBTREE,
 };
 
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+#if IS_ENABLED(CONFIG_I2C)
 static int wm9081_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {