virsh: allow nodedev-list --all --tree

Allow the tree view with --all so that we can see all inactive mdevs in
a tree structure nested under their parent devices.

Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
Reviewed-by: Shalini Chellathurai Saroja <shalini@linux.ibm.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

tools/virsh-nodedev.c

@@ -428,8 +428,8 @@ cmdNodeListDevices(vshControl *ctl, const vshCmd *cmd G_GNUC_UNUSED)
         return false;
     }
 
-    if (tree && (cap_str || inactive || all)) {
-        vshError(ctl, "%s", _("Option --tree is incompatible with other options"));
+    if (tree && (cap_str || inactive)) {
+        vshError(ctl, "%s", _("Option --tree is incompatible with --cap and --inactive"));
         return false;
     }