pca100: use correct irq initialisation function

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-mx2/pca100.c

@@ -237,7 +237,7 @@ MACHINE_START(PCA100, "phyCARD-i.MX27")
 	.io_pg_offst    = ((AIPI_BASE_ADDR_VIRT) >> 18) & 0xfffc,
 	.boot_params    = PHYS_OFFSET + 0x100,
 	.map_io         = mx27_map_io,
-	.init_irq       = mxc_init_irq,
+	.init_irq       = mx27_init_irq,
 	.init_machine   = pca100_init,
 	.timer          = &pca100_timer,
 MACHINE_END