[Intel-gfx] [PATCH] xf86-video-intel build fix for OpenBSD

[Mark Kettenis]

Commit 50a45a1cdd4d8319ba9358974d241069689591c5 introduced the use of
"struct stat" but doesn't include <sys/stat.h>.  Presumably that leaks
in trough some other header on Linux, but on OpenBSD compilation fails
because the struct isn't known.

diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 8e073e2..66f5e7b 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -35,6 +35,7 @@
 #include <unistd.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>
+#include <sys/stat.h>
 #include <time.h>
 #include <sched.h>
 #include <errno.h>