[char-misc:char-misc-next 20/24] ERROR: modpost: "auxiliary_device_init" [drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.ko] undefined!

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git char-misc-next
head:   50e177c5bfd9abc3828cb57e14e6169170f6764a
commit: 393fc2f5948fd340d016a9557eea6e1ac2f6c60c [20/24] misc: microchip: pci1xxxx: load auxiliary bus driver for the PIO function in the multi-function endpoint of pci1xxxx device.
config: x86_64-randconfig-c042-20220905 (https://download.01.org/0day-ci/archive/20220905/202209051534.wmaw4ovY-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-5) 11.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git/commit/?id=393fc2f5948fd340d016a9557eea6e1ac2f6c60c
        git remote add char-misc https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
        git fetch --no-tags char-misc char-misc-next
        git checkout 393fc2f5948fd340d016a9557eea6e1ac2f6c60c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "auxiliary_device_init" [drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.ko] undefined!
>> ERROR: modpost: "__auxiliary_device_add" [drivers/misc/mchp_pci1xxxx/mchp_pci1xxxx_gp.ko] undefined!

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