[ARM] 4872/1: Replaces buggy macro in S3C2410 irq include

This is a bug correction for a macro that generated wrong results.
Nobody used it in official kernel tree, my driver did.
Signed-off-by: NDavide Rizzo <davide@elpa.it>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/arch-s3c2410/irqs.h

@@ -85,7 +85,7 @@
 #define IRQ_EINT23     S3C2410_IRQ(51)
 
 
-#define IRQ_EINT(x)    S3C2410_IRQ((x >= 4) ? (IRQ_EINT4 + (x) - 4) : (S3C2410_IRQ(0) + (x)))
+#define IRQ_EINT(x)    (((x) >= 4) ? (IRQ_EINT4 + (x) - 4) : (IRQ_EINT0 + (x)))
 
 #define IRQ_LCD_FIFO   S3C2410_IRQ(52)
 #define IRQ_LCD_FRAME  S3C2410_IRQ(53)