runtime: device/persist: drop persist dependency from device pkgs

Rather than have device package depend on persist, let's define the
(almost duplicate) structures within device itself, and have the Kata
Container's persist pkg import these.

This'll help avoid unecessary dependencies within our core packages.

Signed-off-by: Eric Ernst <eric_ernst@apple.com>

src/runtime/pkg/device/api/interface.go

@@ -10,7 +10,6 @@ import (
 	"context"
 
 	"github.com/kata-containers/kata-containers/src/runtime/pkg/device/config"
-	persistapi "github.com/kata-containers/kata-containers/src/runtime/virtcontainers/persist/api"
 	"github.com/sirupsen/logrus"
 )
 
@@ -78,10 +77,10 @@ type Device interface {
 	Dereference() uint
 
 	// Save converts Device to DeviceState
-	Save() persistapi.DeviceState
+	Save() config.DeviceState
 
 	// Load loads DeviceState and converts it to specific device
-	Load(persistapi.DeviceState)
+	Load(config.DeviceState)
 }
 
 // DeviceManager can be used to create a new device, this can be used as single
@@ -94,5 +93,5 @@ type DeviceManager interface {
 	IsDeviceAttached(string) bool
 	GetDeviceByID(string) Device
 	GetAllDevices() []Device
-	LoadDevices([]persistapi.DeviceState)
+	LoadDevices([]config.DeviceState)
 }