- frappy_psi.channelswitcher: use isBusy instead of checking value and target
- frappy_psi.ls372: remove underflow mechanism
- frappy_psi.parmod.SwitchDriv: switch the controlled module also when not buys
the reasonly class frappy_psi.parmod.Par represents a parameter
or a component of a tuple parameter
Change-Id: I47208c9d7a6fc377cd56b82cc6a9e8cdb433fe8e