Macro r3::kernel::cfg::cfg_phase3

pub macro cfg_phase3(
    let mut $cfg:ident = Cfg::<$RawCfg:ty>::new($raw_cfg:expr, $allocator:expr)
) {
    ...
}

Construct Cfg<$RawCfg> for the phase 3 configuration.

• $raw_cfg: &mut impl CfgBase
• $allocator: &ConstAllocator

<$RawCfg as CfgBase>::System must implement CfgPhase2.