clocksource: Use a plain u64 instead of cycle_t

There is no point in having an extra type for extra confusion. u64 is
unambiguous.

Conversion was done with the following coccinelle script:

@rem@
@@
-typedef u64 cycle_t;

@fix@
typedef cycle_t;
@@
-cycle_t
+u64

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: John Stultz <john.stultz@linaro.org>
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index c9f3796..93bdb34 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -1460,7 +1460,7 @@ int mlx4_get_roce_gid_from_slave(struct mlx4_dev *dev, int port, int slave_id,
 int mlx4_FLOW_STEERING_IB_UC_QP_RANGE(struct mlx4_dev *dev, u32 min_range_qpn,
 				      u32 max_range_qpn);
 
-cycle_t mlx4_read_clock(struct mlx4_dev *dev);
+u64 mlx4_read_clock(struct mlx4_dev *dev);
 
 struct mlx4_active_ports {
 	DECLARE_BITMAP(ports, MLX4_MAX_PORTS);