[ARM] S3C: Move S3C2410_EXTINT to common regs-irqtype.h header

Add a common include file (regs-irqtype.h) for the IRQ
trigger control register values S3C2410_EXTINT*.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c
index 963f7a4..0192ecd 100644
--- a/arch/arm/plat-s3c24xx/irq.c
+++ b/arch/arm/plat-s3c24xx/irq.c
@@ -62,6 +62,7 @@
 
 #include <asm/mach/irq.h>
 
+#include <plat/regs-irqtype.h>
 #include <mach/regs-irq.h>
 #include <mach/regs-gpio.h>