ARM: imx6q: move clock register map to machine_desc.map_io

map_io is the only place to call iotable_init.

Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
[shawn.guo: rename imx_clock_map_io() to imx6q_clock_map_io()]
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/mach-imx/clock-imx6q.c b/arch/arm/mach-imx/clock-imx6q.c
index 613a1b9..039a7ab 100644
--- a/arch/arm/mach-imx/clock-imx6q.c
+++ b/arch/arm/mach-imx/clock-imx6q.c
@@ -1953,14 +1953,17 @@
 	imx_map_entry(MX6Q, ANATOP, MT_DEVICE),
 };
 
+void __init imx6q_clock_map_io(void)
+{
+	iotable_init(imx6q_clock_desc, ARRAY_SIZE(imx6q_clock_desc));
+}
+
 int __init mx6q_clocks_init(void)
 {
 	struct device_node *np;
 	void __iomem *base;
 	int i, irq;
 
-	iotable_init(imx6q_clock_desc, ARRAY_SIZE(imx6q_clock_desc));
-
 	/* retrieve the freqency of fixed clocks from device tree */
 	for_each_compatible_node(np, NULL, "fixed-clock") {
 		u32 rate;