i2c: normal_i2c can be made const (rtc drivers)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
diff --git a/drivers/rtc/rtc-max6900.c b/drivers/rtc/rtc-max6900.c
index a1cd448..7683412 100644
--- a/drivers/rtc/rtc-max6900.c
+++ b/drivers/rtc/rtc-max6900.c
@@ -54,7 +54,7 @@
 
 #define MAX6900_I2C_ADDR		0xa0
 
-static unsigned short normal_i2c[] = {
+static const unsigned short normal_i2c[] = {
 	MAX6900_I2C_ADDR >> 1,
 	I2C_CLIENT_END
 };