ARM: use common irqchip_init for GIC init

Convert all GIC DT initialization over to use common irqchip_init
function.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: David Brown <davidb@codeaurora.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Bryan Huntsman <bryanh@codeaurora.org>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 1a89824..3a3250f 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -22,6 +22,7 @@
 #include <linux/of_irq.h>
 #include <linux/export.h>
 #include <linux/irqdomain.h>
+#include <linux/irqchip.h>
 #include <linux/of_address.h>
 
 #include <asm/proc-fns.h>
@@ -644,8 +645,6 @@
 }
 
 static const struct of_device_id exynos_dt_irq_match[] = {
-	{ .compatible = "arm,cortex-a9-gic", .data = gic_of_init, },
-	{ .compatible = "arm,cortex-a15-gic", .data = gic_of_init, },
 	{ .compatible = "samsung,exynos4210-combiner",
 			.data = combiner_of_init, },
 	{},
@@ -661,8 +660,10 @@
 	if (!of_have_populated_dt())
 		gic_init_bases(0, IRQ_PPI(0), S5P_VA_GIC_DIST, S5P_VA_GIC_CPU, gic_bank_offset, NULL);
 #ifdef CONFIG_OF
-	else
+	else {
+		irqchip_init();
 		of_irq_init(exynos_dt_irq_match);
+	}
 #endif
 
 	if (!of_have_populated_dt())
@@ -679,6 +680,7 @@
 void __init exynos5_init_irq(void)
 {
 #ifdef CONFIG_OF
+	irqchip_init();
 	of_irq_init(exynos_dt_irq_match);
 #endif
 	/*