[linux-next:master 1867/4072] leds-blinkm.c:undefined reference to `led_classdev_multicolor_register_ext'

[linux-next:master 1867/4072] leds-blinkm.c:undefined reference to `led_classdev_multicolor_register_ext'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   9e6869691724b12e1f43655eeedc35fade38120c
commit: 56e8c56c9af0df8b6de7bc4b6d9a2f4570b055db [1867/4072] leds: Add multicolor support to BlinkM LED driver
config: s390-randconfig-r061-20240812 (https://download.01.org/0day-ci/archive/20240812/202408121759.CgpXclIo-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project f86594788ce93b696675c94f54016d27a6c21d18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240812/202408121759.CgpXclIo-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202408121759.CgpXclIo-lkp@intel.com/

All errors (new ones prefixed by >>):

   s390x-linux-ld: drivers/leds/leds-blinkm.o: in function `blinkm_probe':
>> leds-blinkm.c:(.text+0x2d6): undefined reference to `led_classdev_multicolor_register_ext'
   s390x-linux-ld: drivers/leds/leds-blinkm.o: in function `blinkm_set_mc_brightness':
>> leds-blinkm.c:(.text+0x2b92): undefined reference to `led_mc_calc_color_components'

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