mfd: Restructure wm8994-core device revision handling

Switch on the device type before revision since anything we do here will
be device as well as revision specific.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/wm8994-core.c

@@ -476,10 +476,11 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
 		goto err_enable;
 	}
 
+	switch (wm8994->type) {
+	case WM8994:
 		switch (ret) {
 		case 0:
 		case 1:
-		if (wm8994->type == WM8994)
 			dev_warn(wm8994->dev,
 				 "revision %c not fully supported\n",
 				 'A' + ret);
@@ -487,6 +488,10 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq)
 		default:
 			break;
 		}
+		break;
+	default:
+		break;
+	}
 
 	dev_info(wm8994->dev, "%s revision %c\n", devname, 'A' + ret);