[hid:for-5.18/apple 6/8] hid-apple.c:undefined reference to `devm_led_classdev_register_ext'

[hid:for-5.18/apple 6/8] hid-apple.c:undefined reference to `devm_led_classdev_register_ext'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git for-5.18/apple
head:   c5f09b1b45cbb90147846f82ec0489789c99667e
commit: 9018eacbe623b2c3535da37035e5f22d3d70b6ce [6/8] HID: apple: Add support for keyboard backlight on certain T2 Macs.
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220217/202202170548.gIIZ5R9W-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git/commit/?id=9018eacbe623b2c3535da37035e5f22d3d70b6ce
        git remote add hid https://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
        git fetch --no-tags hid for-5.18/apple
        git checkout 9018eacbe623b2c3535da37035e5f22d3d70b6ce
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=um SUBARCH=i386 SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

   /usr/bin/ld: drivers/hid/hid-apple.o: in function `apple_probe':
>> hid-apple.c:(.text+0x785): undefined reference to `devm_led_classdev_register_ext'
   collect2: error: ld returned 1 exit status

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