Fix esp_eth startup #63
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Debug ethernet 100BASE-TX auto-negotation issues by adding new
ESP_LOGD(...)for register dumps.Tweak the
autonego_timeout_msvscheck_link_period_msto avoid unnecessary 4s hang on boot atesp_eth_start(), bring up the eth netif later once the link is up.Small optimizations to
lan87xx_reset(),lan87xx_negotiate(),lan87xx_pwrctl()to avoid 10ms/100ms waits.Change
lan87xx_negotiate()to not unnecessarily restart auto-negotation when it is already enabled, and started after reset:Add new
ETH_CMD_G_ERROR_COUNTERioctl and log this on eth connect/disconnect events.