futex2: wire up syscall for x86

Wire up syscall entry point for x86 arch, for both i386 and x86_64.

Signed-off-by: André Almeida <andrealmeid@collabora.com>

arch/x86/entry/syscalls/syscall_32.tbl

@@ -453,3 +453,4 @@
 446	i386	landlock_restrict_self	sys_landlock_restrict_self
 447	i386	memfd_secret		sys_memfd_secret
 448	i386	process_mrelease	sys_process_mrelease
+449	i386	futex_waitv		sys_futex_waitv

arch/x86/entry/syscalls/syscall_64.tbl

@@ -370,6 +370,7 @@
 446	common	landlock_restrict_self	sys_landlock_restrict_self
 447	common	memfd_secret		sys_memfd_secret
 448	common	process_mrelease	sys_process_mrelease
+449	common	futex_waitv		sys_futex_waitv
 
 #
 # Due to a historical design error, certain syscalls are numbered differently