add a pseudo device for intrctl(8)
auto creating intctl(8). Is it correct manner?
Revert "auto creating intctl(8). Is it correct manner?"

This reverts commit e9daeabf9c12df1f4621169deb2d0fe45a333fb7.
auto creating intctl(8). first, intrctl is amd64 MD
add intrctl skeleton
implement intrctl list subcommand