fix include order in sys-i386/registers.c

We want sys/ptrace.h before any includes of linux/ptrace.h and
asm/user.h pulls the latter.

---
 arch/um/os-Linux/sys-i386/registers.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

index c6183e7..b487cbe 100644
@@ -5,6 +5,7 @@
  */
 
 #include <errno.h>
+#include <sys/ptrace.h>
 #include <asm/user.h>
 #include "kern_constants.h"
 #include "longjmp.h"

1.5.3.GIT