ARM: mxs: Allow DT clock providers

Add a call to of_clk_init() to register clocks defined in DT.

Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index 4ce27b53..4b210f2 100644
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -14,6 +14,7 @@
 #include <linux/clk/mxs.h>
 #include <linux/clkdev.h>
 #include <linux/clocksource.h>
+#include <linux/clk-provider.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/gpio.h>
@@ -487,6 +488,7 @@
 		mx23_clocks_init();
 	else
 		mx28_clocks_init();
+	of_clk_init(NULL);
 	clocksource_of_init();
 }