of: overlay: Fix forgotten reference to of_overlay_apply()

While technically the ovcs_id is still returned by of_overlay_apply(),
this is an internal function.  All public callers of of_overlay_remove()
pass an ovcs_id returned by the public function of_overlay_fdt_apply().

Fixes: 39a751a4 ("of: change overlay apply input data from unflattened to FDT")
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NRob Herring <robh@kernel.org>

drivers/of/overlay.c

@@ -970,7 +970,7 @@ static int overlay_removal_is_ok(struct overlay_changeset *remove_ovcs)
  * @ovcs_id:	Pointer to overlay changeset id
  *
  * Removes an overlay if it is permissible.  @ovcs_id was previously returned
- * by of_overlay_apply().
+ * by of_overlay_fdt_apply().
  *
  * If an error occurred while attempting to revert the overlay changeset,
  * then an attempt is made to re-apply any changeset entry that was