[stable:linux-5.15.y 505/9999] timer-of.c:undefined reference to `of_iomap'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-5.15.y
head:   d383d0f28ecac0f3375bdfb9a0c4bfac979f6f8f
commit: df04ef63347faac344e69e3c16ff20fead158dcc [505/9999] clocksource/drivers/timer-of: Check return value of of_iomap in timer_of_base_init()
config: s390-randconfig-r025-20230227 (https://download.01.org/0day-ci/archive/20230302/202303021633.9ojFTGFM-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 12.1.0
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/stable/linux-stable.git/commit/?id=df04ef63347faac344e69e3c16ff20fead158dcc
        git remote add stable https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
        git fetch --no-tags stable linux-5.15.y
        git checkout df04ef63347faac344e69e3c16ff20fead158dcc
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303021633.9ojFTGFM-lkp@intel.com/

All errors (new ones prefixed by >>):

   s390-linux-ld: drivers/clocksource/timer-of.o: in function `timer_of_init':
>> timer-of.c:(.init.text+0x1fc): undefined reference to `of_iomap'
   s390-linux-ld: timer-of.c:(.init.text+0x5b8): undefined reference to `iounmap'
   s390-linux-ld: drivers/clocksource/timer-of.o: in function `timer_of_cleanup':
   timer-of.c:(.init.text+0xb5e): undefined reference to `iounmap'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests