ARM: GIC: provide a single initialization function for boot CPU

Provide gic_init() which initializes the GIC distributor and current
CPU's GIC interface for the boot (or single) CPU.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-realview/realview_pb1176.c b/arch/arm/mach-realview/realview_pb1176.c
index a412561..8047b19 100644
--- a/arch/arm/mach-realview/realview_pb1176.c
+++ b/arch/arm/mach-realview/realview_pb1176.c
@@ -305,12 +305,14 @@
 {
 	/* ARM1176 DevChip GIC, primary */
 	gic_cpu_base_addr = __io_address(REALVIEW_DC1176_GIC_CPU_BASE);
-	gic_dist_init(0, __io_address(REALVIEW_DC1176_GIC_DIST_BASE), IRQ_DC1176_GIC_START);
-	gic_cpu_init(0, gic_cpu_base_addr);
+	gic_init(0, IRQ_DC1176_GIC_START,
+		 __io_address(REALVIEW_DC1176_GIC_DIST_BASE),
+		 gic_cpu_base_addr);
 
 	/* board GIC, secondary */
-	gic_dist_init(1, __io_address(REALVIEW_PB1176_GIC_DIST_BASE), IRQ_PB1176_GIC_START);
-	gic_cpu_init(1, __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
+	gic_init(1, IRQ_PB1176_GIC_START,
+		 __io_address(REALVIEW_PB1176_GIC_DIST_BASE),
+		 __io_address(REALVIEW_PB1176_GIC_CPU_BASE));
 	gic_cascade_irq(1, IRQ_DC1176_PB_IRQ1);
 }