[arm-platforms:hack/m1-pcie 12/15] or1k-linux-ld: drivers/iommu/io-pgtable.o:undefined reference to `io_pgtable_apple_dart_init_fns'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git hack/m1-pcie
head:   1fd2c9634dd24fba323baba52200de18e4d3f4ee
commit: 275c6d9c53b68efaf21ec1fd3ee4d1fb9cef87af [12/15] iommu: io-pgtable: add DART pagetable format
config: openrisc-randconfig-r023-20210403 (attached as .config)
compiler: or1k-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/maz/arm-platforms.git/commit/?id=275c6d9c53b68efaf21ec1fd3ee4d1fb9cef87af
        git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
        git fetch --no-tags arm-platforms hack/m1-pcie
        git checkout 275c6d9c53b68efaf21ec1fd3ee4d1fb9cef87af
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=openrisc 

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

All errors (new ones prefixed by >>):

quoted

or1k-linux-ld: drivers/iommu/io-pgtable.o:(.rodata+0x1c): undefined reference to `io_pgtable_apple_dart_init_fns'

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