vexpress: Rename machine classes to use MACHINE_TYPE_NAME Machine class names should use the "-machine" suffix to allow class-name-based machine class lookup to work. Rename the vexpress machine classes using the MACHINE_TYPE_NAME macro. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [AF: Introduce VEXPRESS_*_MACHINE_NAME] Signed-off-by: Andreas Färber <afaerber@suse.de>