coresight: hwtracing subsystem updates for v6.9

Changes targeting Linux v6.9 include:
 - CoreSight: Enable W=1 warnings as default
 - CoreSight: Clean up sysfs/perf mode handling for tracing
 - Support for Qualcomm TPDM CMB Dataset
 - Miscellaneous fixes to the CoreSight subsystem
 - Fix for hisi_ptt PMU to reject events targeting other PMUs

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
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