[mac80211-next:iosm 18/19] error: include/uapi/linux/wwan.h: missing "WITH Linux-syscall-note" for SPDX-License-Identifier

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git iosm
head:   400a4588283d05861c0b8ab54c8ab195f7752e6c
commit: b2913413846a522ef137f08358570f45e8f59606 [18/19] wwan: skeleton code for rtnetlink support
config: riscv-randconfig-r024-20210526 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 6505c630407c5feec818f0bb1c284f9eeebf2071)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git/commit/?id=b2913413846a522ef137f08358570f45e8f59606
        git remote add mac80211-next https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git
        git fetch --no-tags mac80211-next iosm
        git checkout b2913413846a522ef137f08358570f45e8f59606
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

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 >>):

>> error: include/uapi/linux/wwan.h: missing "WITH Linux-syscall-note" for SPDX-License-Identifier
   make[2]: *** [scripts/Makefile.headersinst:63: usr/include/linux/wwan.h] Error 1
   make[2]: Target '__headers' not remade because of errors.
   make[1]: *** [Makefile:1333: headers] Error 2
   make[1]: Target 'headers_install' not remade because of errors.
   make: *** [Makefile:215: __sub-make] Error 2
   make: Target 'headers_install' not remade because of errors.

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

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