Hi Lakshmi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on powerpc/next]
[also build test ERROR on arm64/for-next/core integrity/next-integrity linus/master v5.9-rc7 next-20200930]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Lakshmi-Ramasubramanian/powerpc-Refactor-kexec-functions-to-move-arch-independent-code-to-kernel/20201001-060013
base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config: x86_64-randconfig-s022-20200930 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-201-g24bdaac6-dirty
        # https://github.com/0day-ci/linux/commit/6a1d11b4c60a9d19172f2aee98568c0ce65da4ea
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Lakshmi-Ramasubramanian/powerpc-Refactor-kexec-functions-to-move-arch-independent-code-to-kernel/20201001-060013
        git checkout 6a1d11b4c60a9d19172f2aee98568c0ce65da4ea
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 

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

All errors (new ones prefixed by >>):

   ld: kernel/kexec_file_fdt.o: in function `delete_fdt_mem_rsv':
   kernel/kexec_file_fdt.c:30: undefined reference to `fdt_num_mem_rsv'
>> ld: kernel/kexec_file_fdt.c:35: undefined reference to `fdt_get_mem_rsv'
>> ld: kernel/kexec_file_fdt.c:42: undefined reference to `fdt_del_mem_rsv'

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