Claude review: drm/msm/dp: add HPD callback for dp MST

Claude Code Review Bot
2026-04-12T00:16:20Z

Patch Review

Adds `msm_dp_mst_display_hpd_irq()` to handle MST sideband messages via the standard `drm_dp_mst_hpd_irq_handle_event()` / `drm_dp_mst_hpd_irq_send_new_request()` flow. The HPD dispatch in `msm_dp_irq_hpd_handle()` correctly routes to MST vs SST paths based on `mst_active`. Looks correct.

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