machine: Use type_init() to register machine classes

machine: Use type_init() to register machine classes

Change all machine_init() users that simply call type_register*()
to use type_init().

Cc: Evgeny Voevodin <[email protected]>
Cc: Maksim Kozlov <[email protected]>
Cc: Igor Mitsyanko <[email protected]>
Cc: Dmitry Solodkiy <[email protected]>
Cc: Peter Maydell <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Andrzej Zaborowski <[email protected]>
Cc: Michael Walle <[email protected]>
Cc: "Hervé Poussineau" <[email protected]>
Cc: Aurelien Jarno <[email protected]>
Cc: Leon Alrae <[email protected]>
Cc: Alexander Graf <[email protected]>
Cc: David Gibson <[email protected]>
Cc: Blue Swirl <[email protected]>
Cc: Mark Cave-Ayland <[email protected]>
Cc: Max Filippov <[email protected]>
Cc: "Michael S. Tsirkin" <[email protected]>
Acked-by: Marcel Apfelbaum <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Acked-by: David Gibson <[email protected]>
Signed-off-by: Eduardo Habkost <[email protected]>