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>

drivers/clocksource/h8300_tpu.c

@@ -64,7 +64,7 @@ static inline struct tpu_priv *cs_to_priv(struct clocksource *cs)
 	return container_of(cs, struct tpu_priv, cs);
 }
 
-static cycle_t tpu_clocksource_read(struct clocksource *cs)
+static u64 tpu_clocksource_read(struct clocksource *cs)
 {
 	struct tpu_priv *p = cs_to_priv(cs);
 	unsigned long flags;