clk: zynq: Include clk.h

This clock provider uses the consumer API, so include clk.h
explicitly.

Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/zynq/clkc.c

@@ -19,6 +19,7 @@
  */
 
 #include <linux/clk/zynq.h>
+#include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/of.h>
 #include <linux/of_address.h>