ARM: 7188/1: OMAP2PLUS: Fix build error: 'omap2/omap3_intc_handle_irq' undeclared.

Fix the build break by adding the necessary irq functions to
common header.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index 18c4d5d..012bac7 100644
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -153,6 +153,8 @@
 void omap3_intc_suspend(void);
 void omap3_intc_prepare_idle(void);
 void omap3_intc_resume_idle(void);
+void omap2_intc_handle_irq(struct pt_regs *regs);
+void omap3_intc_handle_irq(struct pt_regs *regs);
 
 /*
  * wfi used in low power code. Directly opcode is used instead