dm: use strncpy to replace strcpy

Use strncpy instead of strcpy to avoid buf overflow.
Fix strncpy null-terminated issues.

Tracked-On: #3245
Signed-off-by: Tianhua Sun <tianhuax.s.sun@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>

devicemodel/hw/pci/virtio/virtio_audio.c

@@ -121,6 +121,7 @@ virtio_audio_kernel_dev_set(struct vbs_dev_info *kdev, const char *name,
 {
 	/* init kdev */
 	strncpy(kdev->name, name, VBS_NAME_LEN);
+	kdev->name[VBS_NAME_LEN - 1] = '\0';
 	kdev->vmid = vmid;
 	kdev->nvq = nvq;
 	kdev->negotiated_features = feature;