ARM: S5P: fix bug in spdif_clk_get_rate

Should be passing the parent clk object when
calling for parent rate.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/plat-s5p/clock.c

@@ -192,7 +192,7 @@ unsigned long s5p_spdif_get_rate(struct clk *clk)
 	if (IS_ERR(pclk))
 		return -EINVAL;
 
-	rate = pclk->ops->get_rate(clk);
+	rate = pclk->ops->get_rate(pclk);
 	clk_put(pclk);
 
 	return rate;