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: Yu Liao <liaoyu15@huawei.com>