hwmon: (wm8350-hwmon) Constify fixed string array

Constify fixed string array and make checkpatch happy.

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

drivers/hwmon/wm8350-hwmon.c

@@ -34,7 +34,7 @@ static ssize_t show_name(struct device *dev,
 	return sprintf(buf, "wm8350\n");
 }
 
-static const char *input_names[] = {
+static const char * const input_names[] = {
 	[WM8350_AUXADC_USB]  = "USB",
 	[WM8350_AUXADC_LINE] = "Line",
 	[WM8350_AUXADC_BATT] = "Battery",