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update stm32f107 ethernet driver: update MII/RMII setting.
update stm32f107 ethernet driver: update hardware checksum setting.
update stm32f107 ethernet driver: update ETH GPIO setting.
update stm32f107 ethernet driver: update dump function.
update stm32f107 ethernet driver: optimize eth_rx, use memcpy.
update stm32f107 ethernet driver: add more debug cmd.
Merge pull request #275 from aozima/pulls

Pulls