[ARM] 5298/1: Drop desc_handle_irq()

desc_handle_irq() was declared as obsolete since long ago.
Replace it with generic_handle_irq()

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-h720x/common.c b/arch/arm/mach-h720x/common.c
index b5f9741..c1fa44c 100644
--- a/arch/arm/mach-h720x/common.c
+++ b/arch/arm/mach-h720x/common.c
@@ -104,14 +104,12 @@
                  struct irq_desc *desc)
 {
 	IRQDBG("%s irq: %d\n", __func__, irq);
-	desc = irq_desc + irq;
 	while (mask) {
 		if (mask & 1) {
 			IRQDBG("handling irq %d\n", irq);
-			desc_handle_irq(irq, desc);
+			generic_handle_irq(irq);
 		}
 		irq++;
-		desc++;
 		mask >>= 1;
 	}
 }