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>

kernel/time/timecounter.c

@@ -43,7 +43,7 @@ EXPORT_SYMBOL_GPL(timecounter_init);
  */
 static u64 timecounter_read_delta(struct timecounter *tc)
 {
-	cycle_t cycle_now, cycle_delta;
+	u64 cycle_now, cycle_delta;
 	u64 ns_offset;
 
 	/* read cycle counter: */
@@ -80,7 +80,7 @@ EXPORT_SYMBOL_GPL(timecounter_read);
  * time previous to the time stored in the cycle counter.
  */
 static u64 cc_cyc2ns_backwards(const struct cyclecounter *cc,
-			       cycle_t cycles, u64 mask, u64 frac)
+			       u64 cycles, u64 mask, u64 frac)
 {
 	u64 ns = (u64) cycles;
 
@@ -90,7 +90,7 @@ static u64 cc_cyc2ns_backwards(const struct cyclecounter *cc,
 }
 
 u64 timecounter_cyc2time(struct timecounter *tc,
-			 cycle_t cycle_tstamp)
+			 u64 cycle_tstamp)
 {
 	u64 delta = (cycle_tstamp - tc->cycle_last) & tc->cc->mask;
 	u64 nsec = tc->nsec, frac = tc->frac;