[PATCH v4] SDRAM Calibration Failed fix for GEN5 SoCFPGA

[Sune Brian]

> Altera official U-Boot (SoCFPGA):
> https://github.com/altera-fpga/u-boot-socfpga - branch socfpga_v2025.07
>

Confirm downstream on default cyclone v socdk always works stable.
No settings are touch nor any file are modified.

What other confirmations are required?

Brian