ERROR: "min_low_pfn" undefined!

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   00e4db51259a5f936fec1424b884f029479d3981
commit: 652b4afb240e5dc196995597942309e89e89c767 staging: wfx: load firmware
date:   10 months ago
config: microblaze-randconfig-r006-20200811 (attached as .config)
compiler: microblaze-linux-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
        git checkout 652b4afb240e5dc196995597942309e89e89c767
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 

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

All errors (new ones prefixed by >>):

   ERROR: "min_low_pfn" [net/mac80211/mac80211.ko] undefined!
>> ERROR: "min_low_pfn" [drivers/staging/wfx/wfx.ko] undefined!
   ERROR: "min_low_pfn" [drivers/mmc/core/mmc_core.ko] undefined!
   ERROR: "min_low_pfn" [drivers/media/common/videobuf2/videobuf2-dma-contig.ko] undefined!
   ERROR: "min_low_pfn" [drivers/dma/fsl-edma-common.ko] undefined!
   ERROR: "min_low_pfn" [crypto/ccm.ko] undefined!
   ERROR: "min_low_pfn" [crypto/gcm.ko] undefined!
   ERROR: "min_low_pfn" [crypto/asymmetric_keys/asym_tpm.ko] undefined!

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

Attachment: .config.gz
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