Hi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on hwmon/hwmon-next]
[also build test ERROR on next-20200324]
[cannot apply to v5.6-rc7]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/yuechao-zhao-advantech-com-cn/hwmon-nct7904-Add-watchdog-function/20200324-095738
base:   https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next
config: h8300-randconfig-a001-20200324 (attached as .config)
compiler: h8300-linux-gcc (GCC) 9.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=9.2.0 make.cross ARCH=h8300 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   h8300-linux-ld: drivers/hwmon/nct7904.o: in function `nct7904_remove':
   drivers/hwmon/nct7904.c:1165: undefined reference to `watchdog_unregister_device'
   h8300-linux-ld: drivers/hwmon/nct7904.o: in function `nct7904_probe':
   drivers/hwmon/nct7904.c:1138: undefined reference to `watchdog_init_timeout'
>> h8300-linux-ld: drivers/hwmon/nct7904.c:1144: undefined reference to `watchdog_register_device'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org