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[i.MX8QM] add SECO+NXP fixes for instability

Gianfranco Mariotti requested to merge seco_lf-5.10.y-dev into seco_lf-5.10.y

NXP declared instability of i.MX8QM, to be fixed with several fixes, some in the kernel and some in SCFW.

  • reduce A72 frequency to 1.3GHz -> kernel
  • disable GPU overdrive mode -> kernel
  • increase VDD_A72 nominal to 1.1375V -> SCFW
  • increase VDD_GPU nominal to 1.03125V -> SCFW

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