[PATCH v5 3/6] timekeeper: use the extended reading function on snapshot acquiring

Make use of the extended reading function on time snapshot getting: get raw cycles value if extended function is defined. The raw cycles value then is used for KVM masterclock. This is a part of the work aiming to move to a more simple scheme of masterclock related values calculation in KVM

[PATCH v5 3/6] timekeeper: use the extended reading function on snapshot acquiring

Make use of the extended reading function on time snapshot getting: get raw cycles value if extended function is defined. The raw cycles value then is used for KVM masterclock. This is a part of the work aiming to move to a more simple scheme of masterclock related values calculation in KVM