simpleperf: add option to specify cycle count threshold

Add support to configure cycle count threshold.  Requires kernel to
include the patch from coresight list:
https://lore.kernel.org/r/20230921033631.1298723-4-anshuman.khandual@arm.com

Bug: 291952311
Test: `simpleperf record -e cs-etm --record-cycles --cycle-threshold 8 cmd`
Change-Id: Ia8b2b87b489a3f28f1a90cf44d16bae802850988
5 files changed