[ARM] Remove compatibility layer for ARM irqs

set_irq_chipdata -> set_irq_chip_data
get_irq_chipdata -> get_irq_chip_data
do_level_IRQ -> handle_level_irq
do_edge_IRQ -> handle_edge_irq
do_simple_IRQ -> handle_simple_irq
irqdesc -> irq_desc
irqchip -> irq_chip

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index fbe288a..074c965 100644
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -195,7 +195,7 @@
 		*IXP4XX_ICMR |= (1 << irq);
 }
 
-static struct irqchip ixp4xx_irq_chip = {
+static struct irq_chip ixp4xx_irq_chip = {
 	.name		= "IXP4xx",
 	.ack		= ixp4xx_irq_ack,
 	.mask		= ixp4xx_irq_mask,
@@ -224,7 +224,7 @@
         /* Default to all level triggered */
 	for(i = 0; i < NR_IRQS; i++) {
 		set_irq_chip(i, &ixp4xx_irq_chip);
-		set_irq_handler(i, do_level_IRQ);
+		set_irq_handler(i, handle_level_irq);
 		set_irq_flags(i, IRQF_VALID);
 	}
 }