mv: cannot stat 'drivers/net/wireless/intel/iwlwifi/mvm/.tmp_mx_ops.o': No such file or directory

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   815f0ddb346c196018d4d8f8f55c12b83da1de3f
commit: 0fbe9a245c60bedebb6dd329966f463bb724450a microblaze: add endianness options to LDFLAGS instead of LD
date:   4 weeks ago
config: microblaze-allmodconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 0fbe9a245c60bedebb6dd329966f463bb724450a
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=microblaze 

All errors (new ones prefixed by >>):

   microblaze-linux-ld: drivers/net/wireless/intel/iwlwifi/mvm/ops.o: compiled for a little endian system and target is big endian
   microblaze-linux-ld: failed to merge target specific data of file drivers/net/wireless/intel/iwlwifi/mvm/ops.o
   microblaze-linux-ld: drivers/net/wireless/intel/iwlwifi/mvm/.tmp_mc_ops.o: compiled for a little endian system and target is big endian
   microblaze-linux-ld: failed to merge target specific data of file drivers/net/wireless/intel/iwlwifi/mvm/.tmp_mc_ops.o
>> mv: cannot stat 'drivers/net/wireless/intel/iwlwifi/mvm/.tmp_mx_ops.o': No such file or directory

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