i2c: normal_i2c can be made const (remaining drivers)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/video/matrox/matroxfb_maven.c b/drivers/video/matrox/matroxfb_maven.c
index 49cd53e..0cd58f8 100644
--- a/drivers/video/matrox/matroxfb_maven.c
+++ b/drivers/video/matrox/matroxfb_maven.c
@@ -1232,7 +1232,7 @@
 	return 0;
 }
 
-static unsigned short normal_i2c[] = { MAVEN_I2CID, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { MAVEN_I2CID, I2C_CLIENT_END };
 I2C_CLIENT_INSMOD;
 
 static struct i2c_driver maven_driver;