tree:   https://github.com/Xilinx/linux-xlnx master
head:   aa49d46895185f1aad49eb58b9fd365d9110f199
commit: 3a0dd946a8cd79058c4baebd74bd75f3dd045059 [9561/10001] staging: xlnxsync: Add driver for Xilinx Synchronizer
config: xtensa-randconfig-a001-20200421 (attached as .config)
compiler: xtensa-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3a0dd946a8cd79058c4baebd74bd75f3dd045059
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day GCC_VERSION=9.3.0 make.cross ARCH=xtensa 

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

All errors (new ones prefixed by >>):

>> error: include/uapi/linux/xlnxsync.h: missing "WITH Linux-syscall-note" for SPDX-License-Identifier
   make[2]: *** [scripts/Makefile.headersinst:66: usr/include/linux/xlnxsync.h] Error 1
   error: include/uapi/linux/xilinx-v4l2-events.h: missing "WITH Linux-syscall-note" for SPDX-License-Identifier
   make[2]: *** [scripts/Makefile.headersinst:66: usr/include/linux/xilinx-v4l2-events.h] Error 1
   make[2]: Target '__headers' not remade because of errors.
   make[1]: *** [Makefile:1195: headers] Error 2
   make[1]: Target 'headers_install' not remade because of errors.
   make: *** [Makefile:179: sub-make] Error 2
   4 real  9 user  2 sys  255.33% cpu 	make INSTALL_HDR_PATH=/tmp/usr/src/linux-headers-xtensa-randconfig-a001-20200421-3a0dd946a8cd79058c4baebd74bd75f3dd045059 headers_install

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