[ARM] pxa: merge assignment of set_wake into pxa_init_{irq,gpio}()

To further clean up the GPIO and IRQ structure:

1. pxa_init_irq_gpio() and pxa_init_gpio() combines into a single
   function pxa_init_gpio()

2. assignment of set_wake merged into pxa_init_{irq,gpio}() as
   an argument

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c
index 54d8448..87ade40 100644
--- a/arch/arm/mach-pxa/pxa27x.c
+++ b/arch/arm/mach-pxa/pxa27x.c
@@ -340,9 +340,8 @@
 
 void __init pxa27x_init_irq(void)
 {
-	pxa_init_irq(34);
-	pxa_init_irq_gpio(128);
-	pxa_init_irq_set_wake(pxa27x_set_wake);
+	pxa_init_irq(34, pxa27x_set_wake);
+	pxa_init_gpio(128, pxa27x_set_wake);
 }
 
 /*