hwmon: (max1668) Make max1668_addr_list array const

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/max1668.c

@@ -30,7 +30,7 @@
 #include <linux/mutex.h>
 
 /* Addresses to scan */
-static unsigned short max1668_addr_list[] = {
+static const unsigned short max1668_addr_list[] = {
 	0x18, 0x19, 0x1a, 0x29, 0x2a, 0x2b, 0x4c, 0x4d, 0x4e, I2C_CLIENT_END };
 
 /* max1668 registers */