arm: omap: irq: add specific compatibles for omap3 and am33xx devices

with this, we can use a compatible flag to figure
out how many irq lines are wired up, no need for
our TI-specific ti,intc-size binding.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 465d725..97845df 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -320,7 +320,9 @@
 	return 0;
 }
 
-IRQCHIP_DECLARE(omap_intc, "ti,omap2-intc", intc_of_init);
+IRQCHIP_DECLARE(omap2_intc, "ti,omap2-intc", intc_of_init);
+IRQCHIP_DECLARE(omap3_intc, "ti,omap3-intc", intc_of_init);
+IRQCHIP_DECLARE(am33xx_intc, "ti,am33xx-intc", intc_of_init);
 
 asmlinkage void __exception_irq_entry omap3_intc_handle_irq(struct pt_regs *regs)
 {