arceb-elf-ld: include/linux/leds.h:193: undefined reference to `devm_led_classdev_register_ext'

[kernel test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   c85fb28b6f999db9928b841f63f1beeb3074eeca
commit: 92a81562e695628086acb92f95090ab09d9b9ec0 leds: lp55xx: Add multicolor framework support to lp55xx
date:   3 months ago
config: arc-randconfig-r035-20201008 (attached as .config)
compiler: arceb-elf-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=92a81562e695628086acb92f95090ab09d9b9ec0
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 92a81562e695628086acb92f95090ab09d9b9ec0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

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 >>):

   arceb-elf-ld: lib/stackdepot.o: in function `filter_irq_stacks':
   lib/stackdepot.c:331: undefined reference to `__irqentry_text_start'
   arceb-elf-ld: lib/stackdepot.c:331: undefined reference to `__irqentry_text_start'
   arceb-elf-ld: lib/stackdepot.o: in function `in_irqentry_text':
   lib/stackdepot.c:323: undefined reference to `__irqentry_text_end'
   arceb-elf-ld: lib/stackdepot.c:323: undefined reference to `__irqentry_text_end'
   arceb-elf-ld: lib/stackdepot.c:324: undefined reference to `__softirqentry_text_start'
   arceb-elf-ld: lib/stackdepot.c:324: undefined reference to `__softirqentry_text_start'
   arceb-elf-ld: lib/stackdepot.c:325: undefined reference to `__softirqentry_text_end'
   arceb-elf-ld: lib/stackdepot.c:325: undefined reference to `__softirqentry_text_end'
   arceb-elf-ld: drivers/leds/leds-lp55xx-common.o: in function `devm_led_classdev_register':
   include/linux/leds.h:193: undefined reference to `devm_led_classdev_register_ext'
>> arceb-elf-ld: include/linux/leds.h:193: undefined reference to `devm_led_classdev_register_ext'

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

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