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

The Xtensa time 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>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Link: https://lore.kernel.org/r/20201110155117.3286247-1-geert+renesas@glider.beSigned-off-by: Stephen Boyd <sboyd@kernel.org>

arch/xtensa/kernel/time.c

@@ -13,7 +13,7 @@
  */
 
 #include <linux/clk.h>
-#include <linux/clk-provider.h>
+#include <linux/of_clk.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
 #include <linux/time.h>