Fix lookup_dcookie syscall entries

* linux/s390/syscallent.h (lookup_dcookie): Add syscall entry.
* linux/s390x/syscallent.h (lookup_dcookie): Likewise.
* linux/tile/syscallent.h (lookup_dcookie): Change nargs to 3.
* linux/x32/syscallent.h (lookup_dcookie): Likewise.
5 files changed