Add this syscall to match the profile in containerd
containerd: a6e52c74fa
libseccomp: 53267af3fb
kernel: 9f6c532f59
futex: Add sys_futex_wake()
To complement sys_futex_waitv() add sys_futex_wake(). This syscall
implements what was previously known as FUTEX_WAKE_BITSET except it
uses 'unsigned long' for the bitmask and takes FUTEX2 flags.
The 'unsigned long' allows FUTEX2_SIZE_U64 on 64bit platforms.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>