clk: keystone: Remove clk.h include

Clock provider drivers generally shouldn't include clk.h because
it's the consumer API. Remove the include here because this is a
provider driver.

Cc: Ivan Khoronzhuk <[e-mail]>
Cc: Murali Karicheri <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/keystone/gate.c

···
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */
-#include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/err.h>
 #include <linux/io.h>

drivers/clk/keystone/pll.c

···
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  */
-#include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/err.h>
 #include <linux/io.h>