pkg/machine: Make this build on FreeBSD/arm64

[NO NEW TESTS NEEDED]

Signed-off-by: Doug Rabson <dfr@rabson.org>

pkg/machine/qemu/options_freebsd_arm64.go

@@ -0,0 +1,21 @@
+package qemu
+
+var (
+	QemuCommand = "qemu-system-aarch64"
+)
+
+func (v *MachineVM) addArchOptions() []string {
+	opts := []string{
+		"-machine", "virt",
+		"-accel", "tcg",
+		"-cpu", "host"}
+	return opts
+}
+
+func (v *MachineVM) prepare() error {
+	return nil
+}
+
+func (v *MachineVM) archRemovalFiles() []string {
+	return []string{}
+}