[ARM] 4450/1: pxa: add pxa25x_init_irq() and pxa27x_init_irq()

/* should be ok this time, I aligned this patch to your arm:pxa2.mbox */

1. move pxa25x specific IRQ initialization code to pxa25x_init_irq()
and pxa27x code to pxa27x_init_irq(), remove pxa_init_irq()

2. replace all pxa_init_irq() with their PXA25x or PXA27x specific
functions

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-pxa/poodle.c

@@ -412,7 +412,7 @@ MACHINE_START(POODLE, "SHARP Poodle")
 	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
 	.fixup		= fixup_poodle,
 	.map_io		= pxa_map_io,
-	.init_irq	= pxa_init_irq,
+	.init_irq	= pxa25x_init_irq,
 	.timer		= &pxa_timer,
 	.init_machine	= poodle_init,
 MACHINE_END