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>

include/linux/timekeeper_internal.h

@@ -29,9 +29,9 @@
  */
 struct tk_read_base {
 	struct clocksource	*clock;
-	cycle_t			(*read)(struct clocksource *cs);
-	cycle_t			mask;
-	cycle_t			cycle_last;
+	u64			(*read)(struct clocksource *cs);
+	u64			mask;
+	u64			cycle_last;
 	u32			mult;
 	u32			shift;
 	u64			xtime_nsec;
@@ -97,7 +97,7 @@ struct timekeeper {
 	struct timespec64	raw_time;
 
 	/* The following members are for timekeeping internal use */
-	cycle_t			cycle_interval;
+	u64			cycle_interval;
 	u64			xtime_interval;
 	s64			xtime_remainder;
 	u32			raw_interval;
@@ -136,7 +136,7 @@ extern void update_vsyscall_tz(void);
 
 extern void update_vsyscall_old(struct timespec *ts, struct timespec *wtm,
 				struct clocksource *c, u32 mult,
-				cycle_t cycle_last);
+				u64 cycle_last);
 extern void update_vsyscall_tz(void);
 
 #else