[xlnx:xlnx_rebase_v5.4 188/1633] ./usr/include/linux/videodev2.h:2329:20: error: field 'timestamp' has incomplete type

tree:   https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4
head:   ebece0e2eab7ce2dfd7ec9d263a6744fc3f6fb24
commit: d494b0c170eb437dae159ecaaac7d45e4defa96c [188/1633] media: xilinx: Add HLS core driver
config: i386-allyesconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/Xilinx/linux-xlnx/commit/d494b0c170eb437dae159ecaaac7d45e4defa96c
        git remote add xlnx https://github.com/Xilinx/linux-xlnx
        git fetch --no-tags xlnx xlnx_rebase_v5.4
        git checkout d494b0c170eb437dae159ecaaac7d45e4defa96c
        # save the attached .config to linux build tree
        make W=1 ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

   In file included from ./usr/include/linux/xilinx-hls.h:6,
                    from <command-line>:32:

quoted

./usr/include/linux/videodev2.h:2329:20: error: field 'timestamp' has incomplete type

    2329 |  struct timespec   timestamp;
         |                    ^~~~~~~~~

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