efx_cxl.c:undefined reference to `devm_cxl_probe_mem'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   f0100363d8c374bd8e9ea7c9ba02744f0b802ca4
commit: 0418860ef2ca8ab4e696ce3913fd76660c881c0e sfc: obtain and map cxl range using devm_cxl_probe_mem
date:   3 months ago
config: powerpc64-randconfig-1000-20260922 (https://download.01.org/0day-ci/archive/20260922/202609221035.8i5jprQK-lkp@xxxxxxxxx/config)
compiler: powerpc64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260922/202609221035.8i5jprQK-lkp@xxxxxxxxx/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
| Fixes: 0418860ef2ca ("sfc: obtain and map cxl range using devm_cxl_probe_mem")
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609221035.8i5jprQK-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

   powerpc64-linux-ld: drivers/net/ethernet/sfc/efx_cxl.o: in function `efx_cxl_init':
>> efx_cxl.c:(.text+0x100): undefined reference to `devm_cxl_probe_mem'

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