fixed the following coccicheck:
./drivers/hwmon/hwmon.c:82:60-61: WARNING opportunity for kobj_to_dev()
Reported-by: NAbaci Robot <abaci@linux.alibaba.com>
Signed-off-by: NYang Li <yang.lee@linux.alibaba.com>
Link: https://lore.kernel.org/r/1614071667-5665-1-git-send-email-yang.lee@linux.alibaba.comSigned-off-by: NGuenter Roeck <linux@roeck-us.net>