mfd: Convert Wolfson MFD drivers to use irq_data accessor function

Actually makes the code larger rathe rthan smaller but does provide some
isolation against core API changes.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/mfd/wm8350-irq.c b/drivers/mfd/wm8350-irq.c
index ba966ae..5839966 100644
--- a/drivers/mfd/wm8350-irq.c
+++ b/drivers/mfd/wm8350-irq.c
@@ -419,14 +419,14 @@
 
 static void wm8350_irq_lock(struct irq_data *data)
 {
-	struct wm8350 *wm8350 = data->chip_data;
+	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
 
 	mutex_lock(&wm8350->irq_lock);
 }
 
 static void wm8350_irq_sync_unlock(struct irq_data *data)
 {
-	struct wm8350 *wm8350 = data->chip_data;
+	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(wm8350->irq_masks); i++) {
@@ -444,7 +444,7 @@
 
 static void wm8350_irq_enable(struct irq_data *data)
 {
-	struct wm8350 *wm8350 = data->chip_data;
+	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
 	struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350,
 							     data->irq);
 
@@ -453,7 +453,7 @@
 
 static void wm8350_irq_disable(struct irq_data *data)
 {
-	struct wm8350 *wm8350 = data->chip_data;
+	struct wm8350 *wm8350 = irq_data_get_irq_chip_data(data);
 	struct wm8350_irq_data *irq_data = irq_to_wm8350_irq(wm8350,
 							     data->irq);