xf86drm.c: fix build failure
When building the lib on buildroot [1] the following issue was occured
./xf86drm.c: In function 'drmNodeIsDRM':
../xf86drm.c:2825:7: error: "__FreeBSD__" is not defined [-Werror=undef]
#elif __FreeBSD__
^
../xf86drm.c: In function 'drmGetMinorNameForFD':
../xf86drm.c:2938:7: error: "__FreeBSD__" is not defined [-Werror=undef]
#elif __FreeBSD__
^
../xf86drm.c: In function 'drmParsePciBusInfo':
../xf86drm.c:3258:7: error: "__FreeBSD__" is not defined [-Werror=undef]
#elif __FreeBSD__
^
../xf86drm.c: In function 'drmParsePciDeviceInfo':
../xf86drm.c:3427:7: error: "__FreeBSD__" is not defined [-Werror=undef]
#elif __FreeBSD__
^
../xf86drm.c: In function 'drmGetDeviceNameFromFd2':
../xf86drm.c:4305:7: error: "__FreeBSD__" is not defined [-Werror=undef]
#elif __FreeBSD__
^
[1] http://autobuild.buildroot.net/results/e0d513149987d035c3493597d0c56edcad5da5cd/build-end.log
Signed-off-by: Heiko Thiery heiko.thiery@gmail.com
Edited by Heiko Thiery