board: phytec: common: Move eeprom read to new function

We need to read multiple times from different offsets in API v3.
Move the EEPROM read logic into a dedicated function to make it
usable multiple times.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Tested-by: Wadim Egorov <w.egorov@phytec.de>
1 file changed