arm64: perf: Reject stand-alone CHAIN events for PMUv3

arm64: perf: Reject stand-alone CHAIN events for PMUv3

It doesn't make sense for a perf event to be configured as a CHAIN event
in isolation, so extend the arm_pmu structure with a ->filter_match()
function to allow the backend PMU implementation to reject CHAIN events
early.

Cc: <[email protected]>
Reviewed-by: Suzuki K Poulose <[email protected]>
Signed-off-by: Will Deacon <[email protected]>