XXXX don't fail device detach when it's physically removed

@@ -15055,11 +15055,11 @@
                 /* Get full devname */
                 devname = kmem_alloc(MAXNAMELEN + 1, KM_SLEEP);
                 (void) ddi_deviname(cdip, devname);
                 /* Clean cache */
                 (void) devfs_clean(parent, devname + 1,
-                    DV_CLEAN_FORCE);
+                    DV_CLEAN_FORCE|DV_DEVI_GONE);
                 kmem_free(devname, MAXNAMELEN + 1);
         }
         if (rpip != NULL) {
                 if (MDI_PI_IS_OFFLINE(rpip)) {
                         rval = DDI_SUCCESS;

@@ -15125,11 +15125,11 @@
                 /* Get full devname */
                 devname = kmem_alloc(MAXNAMELEN + 1, KM_SLEEP);
                 (void) ddi_deviname(cdip, devname);
                 /* Clean cache */
                 (void) devfs_clean(pdip, devname + 1,
-                    DV_CLEAN_FORCE);
+                    DV_CLEAN_FORCE|DV_DEVI_GONE);
                 kmem_free(devname, MAXNAMELEN + 1);
         }
 
         rval = ndi_devi_offline(cdip, flags);