drivers: eth: mcux: Add ETH_MCUX_1 config
drivers: eth: mcux: Add ETH_MCUX_1 config

Add new config allowing to enable the second Ethernet port
on i.MX RT1060 SoC family.

Signed-off-by: Armand Ciejak <1163072739536c118d7c930f43f624de94a0742f@users.noreply.github.com>

Vudentz/zephyr,zephyrproject-rtos/zephyr,Vudentz/zephyr,galak/zephyr,Vudentz/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,galak/zephyr,finikorg/zephyr,nashif/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,nashif/zephyr,nashif/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,nashif/zephyr,Vudentz/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,nashif/zephyr,Vudentz/zephyr,finikorg/zephyr,Vudentz/zephyr