tools/nolibc: s390: include std.h

arch-s390.h uses types from std.h, but does not include it.
Depending on the inclusion order the compilation can fail.
Include std.h explicitly to avoid these errors.

Fixes: 404fa87 ("tools/nolibc: s390: provide custom implementation for sys_fork")
Cc: [email protected]
Signed-off-by: Thomas Weißschuh <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Thomas Weißschuh <[email protected]>

Author: t-8ch

tools/include/nolibc/arch-s390.h

@@ -10,6 +10,7 @@
 
 #include "compiler.h"
 #include "crt.h"
+#include "std.h"
 
 /* Syscalls for s390:
  *   - registers are 64-bit