board: phytec: phycore_imx8mp: Make RAM size configuration fix

We might not be able to always rely on the EEPROM introspection data.
So add a config option alternative which configures the RAM size
to a fix value.

We still try to read the EEPROM introspection data at this point.
So we can print the SoM information if available.

Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
2 files changed