SVN r252892: videodev2.h update breaks gcc compilation

[Michael Butler]

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The recent linux header update triggers the following error:

In file included from /usr/src/sys/compat/linux/linux_ioctl.c:91:
/usr/src/sys/contrib/v4l/videodev2.h:430: warning: declaration does not
declare anything
/usr/src/sys/contrib/v4l/videodev2.h:460: warning: declaration does not
declare anything
/usr/src/sys/contrib/v4l/videodev2.h:837: warning: declaration does not
declare anything
/usr/src/sys/contrib/v4l/videodev2.h:930: warning: declaration does not
declare anything
/usr/src/sys/contrib/v4l/videodev2.h:1478: warning: declaration does not
declare anything
/usr/src/sys/contrib/v4l/videodev2.h:1600: warning: declaration does not
declare anything
/usr/src/sys/contrib/v4l/videodev2.h:1651: warning: declaration does not
declare anything
*** [linux_ioctl.o] Error code 1

	imb
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