[MIPS] Add GT641xx IRQ routines.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/cobalt/rtc.c b/arch/mips/cobalt/rtc.c
index 284daef..e70794b 100644
--- a/arch/mips/cobalt/rtc.c
+++ b/arch/mips/cobalt/rtc.c
@@ -20,6 +20,7 @@
 #include <linux/errno.h>
 #include <linux/init.h>
 #include <linux/ioport.h>
+#include <linux/mc146818rtc.h>
 #include <linux/platform_device.h>
 
 static struct resource cobalt_rtc_resource[] __initdata = {
@@ -29,8 +30,8 @@
 		.flags	= IORESOURCE_IO,
 	},
 	{
-		.start	= 8,
-		.end	= 8,
+		.start	= RTC_IRQ,
+		.end	= RTC_IRQ,
 		.flags	= IORESOURCE_IRQ,
 	},
 };