arm: omap: irq: always define omap3 support

remove ifdef around omap3 INTC support. This
will make it easier to reuse code for PM.
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/mach-omap2/irq.c

@@ -265,7 +265,6 @@ void __init omap_intc_of_init(void)
 	of_irq_init(irq_match);
 }
 
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_SOC_AM33XX)
 static struct omap_intc_regs intc_context;
 
 void omap_intc_save_context(void)
@@ -333,4 +332,3 @@ asmlinkage void __exception_irq_entry omap3_intc_handle_irq(struct pt_regs *regs
 {
 	omap_intc_handle_irq(regs);
 }
-#endif /* CONFIG_ARCH_OMAP3 */