std/os: define and use dev_t for linux x86_64
std/os: define and use dev_t for linux x86_64

raulgrell/zig,andrewrk/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,raulgrell/zig,raulgrell/zig,zig-lang/zig,zig-lang/zig,raulgrell/zig