[ARM] S3C64XX: Fix EINT group macro definition

Fix IRQ_EINT_GROUP which has an extra _ in it and
an error in the IRQ offset.
Signed-off-by: NMatt Hsu <matt_hsu@openmoko.org>
[ben-linux@fluff.org: rewrite description]
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

arch/arm/plat-s3c64xx/include/plat/irqs.h

@@ -191,7 +191,7 @@
 #define IRQ_EINT_GROUP8_BASE	(IRQ_EINT_GROUP7_BASE + IRQ_EINT_GROUP7_NR)
 #define IRQ_EINT_GROUP9_BASE	(IRQ_EINT_GROUP8_BASE + IRQ_EINT_GROUP8_NR)
 
-#define IRQ_EINT_GROUP(group, no)	(IRQ_EINT_GROUP##group##__BASE + (x))
+#define IRQ_EINT_GROUP(group, no)	(IRQ_EINT_GROUP##group##_BASE + (no))
 
 /* Set the default NR_IRQS */