config: make CLOCKSOURCE_VALIDATE_LAST_CYCLE not set by default

openeuler inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7393E
CVE: NA

-------------------------------

The ARM ARM states the following (where a CPU is a device):

	The system counter must provide a uniform view of system time. More
	precisely, it must be impossible for the following sequence of events
	to show system time going backwards:

	1) Device A reads the time from the system counter.

	2) Device A communicates with another agent in the system, Device B.

	3) After recognizing the communication from Device A, Device B reads
	   the time from the system counter.

So make CLOCKSOURCE_VALIDATE_LAST_CYCLE unset by default.
Signed-off-by: NYu Liao <liaoyu15@huawei.com>

arch/arm64/configs/openeuler_defconfig

@@ -69,6 +69,7 @@ CONFIG_CONTEXT_TRACKING=y
 # CONFIG_CONTEXT_TRACKING_FORCE is not set
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
+# CONFIG_CLOCKSOURCE_VALIDATE_LAST_CYCLE is not set
 # end of Timers subsystem
 
 CONFIG_PREEMPT_NONE=y