nds32: Replace <linux/clk-provider.h> by <linux/of_clk.h>

The Andes platform code is not a clock provider, and just needs to call
of_clk_init().

Hence it can include <linux/of_clk.h> instead of <linux/clk-provider.h>.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Greentime Hu <green.hu@gmail.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greentime Hu <green.hu@gmail.com>

arch/nds32/kernel/time.c

@@ -2,7 +2,7 @@
 // Copyright (C) 2005-2017 Andes Technology Corporation
 
 #include <linux/clocksource.h>
-#include <linux/clk-provider.h>
+#include <linux/of_clk.h>
 
 void __init time_init(void)
 {