Amend stm32 ethernet driver with small changes:
*Provide HAL_ETH_Init return value in error message,
return on error and move it before thread creation
*Provide computed MAC address in debug message
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
Until Zephyr has infrastructure to enable/disable the
reception of multicast frames we disable the hardware
multicast frame filter completly and pass all multicast
frames to the upper layer and let that deal with them.
Signed-off-by: Erwin Rol <erwin@erwinrol.com>
