mfd: Move PCF50633 IRQ protoypes where the definitions can see them

Fixed warnings about unprototyped global functions.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/pcf50633-core.c

@@ -25,13 +25,6 @@
 
 #include <linux/mfd/pcf50633/core.h>
 
-int pcf50633_irq_init(struct pcf50633 *pcf, int irq);
-void pcf50633_irq_free(struct pcf50633 *pcf);
-#ifdef CONFIG_PM
-int pcf50633_irq_suspend(struct pcf50633 *pcf);
-int pcf50633_irq_resume(struct pcf50633 *pcf);
-#endif
-
 static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data)
 {
 	int ret;

include/linux/mfd/pcf50633/core.h

@@ -227,4 +227,11 @@ static inline struct pcf50633 *dev_to_pcf50633(struct device *dev)
 	return dev_get_drvdata(dev);
 }
 
+int pcf50633_irq_init(struct pcf50633 *pcf, int irq);
+void pcf50633_irq_free(struct pcf50633 *pcf);
+#ifdef CONFIG_PM
+int pcf50633_irq_suspend(struct pcf50633 *pcf);
+int pcf50633_irq_resume(struct pcf50633 *pcf);
+#endif
+
 #endif