mx23evk: Enable USB support

This enabled USB support for the mx23evk board.

Series-changes: 3
- Add a obvious commitlog;

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
mx23_olinuxino: Enable USB support

This enabled USB support for the mx23_olinuxino board.

Series-changes: 3
- Add a obvious commitlog;

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
mx23_olinuxino: Add ethernet support

This adds support to the LAN9512 chip included in the board and extend
the environment to easy netboot use.

Series-to: uboot
Series-changes: 2
- Move GPIO initialization to board_early_init_f;
- Extend commitlog;

Series-changes: 3
- Remove useless newlines
- Add NOPULL in MUX setup
- Fix commitlog to say the right chip number
- Use CONFIG_CMD_USB to disable GPIO setting

Series-version: 3

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>