Add cmd/vsudd in DH_GOLANG_EXCLUDES for aarch64

It fails to build with:

[   93s] src/github.com/linuxkit/virtsock/cmd/vsudd/main.go:102:11: undefined: syscall.Dup2
[   93s] src/github.com/linuxkit/virtsock/cmd/vsudd/main.go:103:11: undefined: syscall.Dup2
[   93s] src/github.com/linuxkit/virtsock/cmd/vsudd/main.go:104:11: undefined: syscall.Dup2

And binaries are anyway not installed in binary packages.

Signed-off-by: Dylan Aïssi dylan.aissi@collabora.com