ASoC: wm8988: 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/wm8988.c

@@ -912,7 +912,7 @@ static struct spi_driver wm8988_spi_driver = {
 };
 #endif /* CONFIG_SPI_MASTER */
 
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+#if IS_ENABLED(CONFIG_I2C)
 static int wm8988_i2c_probe(struct i2c_client *i2c,
 			    const struct i2c_device_id *id)
 {
@@ -964,7 +964,7 @@ static struct i2c_driver wm8988_i2c_driver = {
 static int __init wm8988_modinit(void)
 {
 	int ret = 0;
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+#if IS_ENABLED(CONFIG_I2C)
 	ret = i2c_add_driver(&wm8988_i2c_driver);
 	if (ret != 0) {
 		printk(KERN_ERR "Failed to register WM8988 I2C driver: %d\n",
@@ -984,7 +984,7 @@ module_init(wm8988_modinit);
 
 static void __exit wm8988_exit(void)
 {
-#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+#if IS_ENABLED(CONFIG_I2C)
 	i2c_del_driver(&wm8988_i2c_driver);
 #endif
 #if defined(CONFIG_SPI_MASTER)