[PATCH v6 4/4] soc: imx8m: change to use platform driver

[kernel test robot]

Hi Alice,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on robh/for-next]
[also build test WARNING on v5.10-rc6 next-20201201]
[cannot apply to shawnguo/for-next krzk/for-next]
[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/Alice-Guo/dt-bindings-soc-imx8m-add-DT-Binding-doc-for-soc-unique-ID/20201124-100402
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
config: mips-randconfig-r026-20201201 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 2671fccf0381769276ca8246ec0499adcb9b0355)
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
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://github.com/0day-ci/linux/commit/410e3191d62767ba3d347a48d38ad3bd00bee387
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Alice-Guo/dt-bindings-soc-imx8m-add-DT-Binding-doc-for-soc-unique-ID/20201124-100402
        git checkout 410e3191d62767ba3d347a48d38ad3bd00bee387
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips 

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

All warnings (new ones prefixed by >>):

>> drivers/soc/imx/soc-imx8m.c:174:34: warning: unused variable 'imx8_machine_match' [-Wunused-const-variable]
   static const struct of_device_id imx8_machine_match[] = {
                                    ^
   1 warning generated.

vim +/imx8_machine_match +174 drivers/soc/imx/soc-imx8m.c

   173	
 > 174	static const struct of_device_id imx8_machine_match[] = {
   175		{ .compatible = "fsl,imx8mq", .data = &imx8mq_soc_data, },
   176		{ .compatible = "fsl,imx8mm", .data = &imx8mm_soc_data, },
   177		{ .compatible = "fsl,imx8mn", .data = &imx8mn_soc_data, },
   178		{ .compatible = "fsl,imx8mp", .data = &imx8mp_soc_data, },
   179		{ }
   180	};
   181	

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