[ARM] i.MX: add missing clock functions exports

Export missing Clock API symbols.
Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/mach-imx/clock.c

@@ -172,24 +172,29 @@ struct clk *clk_get(struct device *dev, const char *id)
 
 	return clk;
 }
+EXPORT_SYMBOL(clk_get);
 
 void clk_put(struct clk *clk)
 {
 }
+EXPORT_SYMBOL(clk_put);
 
 int clk_enable(struct clk *clk)
 {
 	return 0;
 }
+EXPORT_SYMBOL(clk_enable);
 
 void clk_disable(struct clk *clk)
 {
 }
+EXPORT_SYMBOL(clk_disable);
 
 unsigned long clk_get_rate(struct clk *clk)
 {
 	return clk->get_rate();
 }
+EXPORT_SYMBOL(clk_get_rate);
 
 int imx_clocks_init(void)
 {