Update sys to support loong64

[zhaixiaojuan]

Now the sys under the vendor directory does not support loong64, resulting in the following error when running on the LoongArch64 architecture:

go build -tags "" -ldflags "-X main.gitCommit=v0.9.0-105-ga469c0f -X main.version=0.9.0"  -o oci-runtime-tool ./cmd/oci-runtime-tool
# golang.org/x/sys/unix
vendor/golang.org/x/sys/unix/affinity_linux.go:14:20: undefined: _CPU_SETSIZE
vendor/golang.org/x/sys/unix/affinity_linux.go:14:35: undefined: _NCPUBITS
vendor/golang.org/x/sys/unix/affinity_linux.go:17:25: undefined: cpuMask
vendor/golang.org/x/sys/unix/sockcmsg_unix.go:33:9: undefined: Cmsghdr
vendor/golang.org/x/sys/unix/syscall_linux.go:436:11: undefined: RawSockaddrLinklayer
vendor/golang.org/x/sys/unix/syscall_linux.go:461:9: undefined: RawSockaddrNetlink
vendor/golang.org/x/sys/unix/syscall_linux.go:477:10: undefined: RawSockaddrHCI
vendor/golang.org/x/sys/unix/syscall_linux.go:494:11: undefined: RawSockaddrL2
vendor/golang.org/x/sys/unix/syscall_linux.go:543:6: undefined: RawSockaddrRFCOMM
vendor/golang.org/x/sys/unix/syscall_linux.go:574:10: undefined: RawSockaddrCAN
vendor/golang.org/x/sys/unix/syscall_linux.go:574:10: too many errors
make: *** [Makefile:16: tool] Error 2

To fix this, I updated the sys version.

[zhaixiaojuan]

cc @tianon

[bryantbiggs]

@zhaixiaojuan this looks like it needs a rebase or should it be closed in favor of #765 ?