[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-orion5x/irq.c b/arch/arm/mach-orion5x/irq.c
index 2545ff9..15f27aa 100644
--- a/arch/arm/mach-orion5x/irq.c
+++ b/arch/arm/mach-orion5x/irq.c
@@ -162,7 +162,7 @@
 				polarity ^= 1 << pin;
 				writel(polarity, GPIO_IN_POL);
 			}
-			desc_handle_irq(irq, desc);
+			generic_handle_irq(irq);
 		}
 	}
 }