ASoC: Move WM8580 to normal I2C device probe

Refactor the WM8580 device registration to probe via standard I2C device
registration, registering the DAIs once the device has probed via I2C.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/wm8580.h

@@ -28,11 +28,6 @@
 #define WM8580_CLKSRC_OSC  4
 #define WM8580_CLKSRC_NONE 5
 
-struct wm8580_setup_data {
-	int i2c_bus;
-	unsigned short i2c_address;
-};
-
 #define WM8580_DAI_PAIFRX 0
 #define WM8580_DAI_PAIFTX 1