[klibc] SYSCALLS.def: add openat() on 64-bit platforms

We had __openat() as a system call on 32 bits, wrappered in openat.c;
however, the unwrappered system call used on 64-bit platforms was
missing from SYSCALLS.def.

Reported-by: Maximilan Attems <max@stro.at>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
1 file changed