drm/msm/a5xx: Add hangcheck progress detection

A5xx has no progress callback, so any submit still running when the
hangcheck timer expires is declared hung, and long compute dispatches
such as KHR-GLES31.core.compute_shader.simple-compute-shared_context are
reset on A530 while still making progress.

Comparing the CP IB1/IB2 state, as a3xx and a6xx do, is not enough: during
a long dispatch the CP has fetched the whole IB and waits in one packet.
Also count ALU working cycles on SP performance counter 0, which Mesa
leaves to the kernel (and the kernel hasn't been using up to now).

Assisted-by: LLM
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/757302/
Message-ID: <20260930-adreno-progress-v2-3-3882f0fcd7b4@oss.qualcomm.com>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

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