[C26][C43] SCFW: i.MX8QM: add SECO+NXP fixes for instability

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

SCFW REFERENCE: commit:
https://git.seco.com/arm/nxp/imx/develop/yocto/5.x/fw/scfw_2021.04/-/commit/9fc55473763c8d587d407fc4e75cce9def875693