net: smc911x: Properly handle EEPROM MAC address
When compiled as a DM_ETH driver, the scm911x driver was reading the MAC address from the optional EEPROM storage, but failed to copy this to the platdata struct. Since it was also missing a definition of the read_rom_hwaddr() function, the generic Ethernet code was dismissing this MAC address, falling back to a random address or denying to start at all. Add an implementation of .read_rom_hwaddr, and refactor the function reading the ROM address to be called by all interested parties. This fixes MAC address issues when using the driver in DM_ETH "mode". Signed-off-by: NAndre Przywara <andre.przywara@arm.com> Reviewed-By: NRamon Fried <rfried.dev@gmail.com> Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
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