clk: qcom: Include clk.h

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

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

drivers/clk/qcom/mmcc-msm8960.c

@@ -19,6 +19,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/regmap.h>
 #include <linux/reset-controller.h>