ARM: pxa: balloon3: Fix build error

irq_data_get_chip() function does not exist, call irq_desc_get_chip()
instead.

Fixes: 9ec9756 ("ARM/pxa: Prepare balloon3_irq_handler for irq argument removal")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>

arch/arm/mach-pxa/balloon3.c

@@ -502,7 +502,7 @@ static void balloon3_irq_handler(unsigned int __irq, struct irq_desc *desc)
 					balloon3_irq_enabled;
 	do {
 		struct irq_data *d = irq_desc_get_irq_data(desc);
-		struct irq_chip *chip = irq_data_get_chip(d);
+		struct irq_chip *chip = irq_desc_get_chip(desc);
 		unsigned int irq;
 
 		/* clear useless edge notification */