xf86drm: include <limits.h> for PATH_MAX

fixes compilation error with musl libc and Solaris based platforms.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92082
Signed-off-by: Felix Janda <felix.janda@posteo.de>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
1 file changed