clk: fixed-rate: Remove export symbol on setup function

This function is only called by builtin code, but we always
exported it and had marked it as __init before commit
e4eda8e0654c (clk: remove exported function from __init section,
2013-01-06) removed that marking. Given that it isn't used by
modules, lets unexport it and add back __init.

Cc: Denis Efremov <yefremov.denis@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/clk-fixed-rate.c

@@ -190,11 +190,10 @@ static struct clk *_of_fixed_clk_setup(struct device_node *node)
 /**
  * of_fixed_clk_setup() - Setup function for simple fixed rate clock
  */
-void of_fixed_clk_setup(struct device_node *node)
+void __init of_fixed_clk_setup(struct device_node *node)
 {
 	_of_fixed_clk_setup(node);
 }
-EXPORT_SYMBOL_GPL(of_fixed_clk_setup);
 CLK_OF_DECLARE(fixed_clk, "fixed-clock", of_fixed_clk_setup);
 
 static int of_fixed_clk_remove(struct platform_device *pdev)