[linux-next:master 6486/7430] undefined reference to `spi_mem_supports_op'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   ccc252d2e818f6a479441119ad453c3ce7c7c461
commit: 86d1c6bbae32122c5f703b2d8acccf5d4258f2bb [6486/7430] spi: stm32-qspi: add automatic poll status feature
config: microblaze-randconfig-p002-20210606 (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
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=86d1c6bbae32122c5f703b2d8acccf5d4258f2bb
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 86d1c6bbae32122c5f703b2d8acccf5d4258f2bb
        # 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 <redacted>

All errors (new ones prefixed by >>):

   microblaze-linux-ld: drivers/spi/spi-stm32-qspi.o: in function `stm32_qspi_poll_status':

quoted

(.text+0xe60): undefined reference to `spi_mem_supports_op'

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