clk: Move clk_core_reparent_orphans() under CONFIG_OF

A recent addition exposed a helper that is only used for CONFIG_OF. Move
it into the CONFIG_OF zone in this file to make the compiler stop
warning about an unused function.

Fixes: 66d9506 ("clk: walk orphan list on clock provider registration")
Signed-off-by: Olof Johansson <olof@lixom.net>
Link: https://lkml.kernel.org/r/20191217082501.424892072D@mail.kernel.org
[sboyd@kernel.org: "Simply" move the function instead]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

drivers/clk/clk.c

@@ -3277,13 +3277,6 @@ static void clk_core_reparent_orphans_nolock(void)
 	}
 }
 
-static void clk_core_reparent_orphans(void)
-{
-	clk_prepare_lock();
-	clk_core_reparent_orphans_nolock();
-	clk_prepare_unlock();
-}
-
 /**
  * __clk_core_init - initialize the data structures in a struct clk_core
  * @core:	clk_core being initialized
@@ -4193,6 +4186,13 @@ int clk_notifier_unregister(struct clk *clk, struct notifier_block *nb)
 EXPORT_SYMBOL_GPL(clk_notifier_unregister);
 
 #ifdef CONFIG_OF
+static void clk_core_reparent_orphans(void)
+{
+	clk_prepare_lock();
+	clk_core_reparent_orphans_nolock();
+	clk_prepare_unlock();
+}
+
 /**
  * struct of_clk_provider - Clock provider registration structure
  * @link: Entry in global list of clock providers