ascend inclusion
category: feature
bugzilla: NA
CVE: NA

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Itrace (Interrupt Tracing) is a lightweight interrupt tracing tool. It
supports the following functions:
* Ihandler(Interrupt Handler) tracer can trace and calculate the time
  consumed of the hardware irq function and list the name, number and
  duration of the interrupt.
* Ihandler supports dynamic disable and threshold setting.
Signed-off-by: NBixuan Cui <cuibixuan@huawei.com>
Reviewed-by: NDing Tianhong <dingtianhong@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>