Update mx6ulevk board files and build configurations to enable
OF_CONTROL and DM drivers.

1. QSPI settings and codes update for using DM QSPI driver.
   For DM and non-DM driver, the AMBA address is not same.
2. Update configurations for DM i2c driver, using CONFIG_SYS_I2C for non-DM driver
3. GPIO update for adding gpio_request
4. Add FEC DM driver support for two FEC controllers.
5. Enable USB DM driver.
6. Enable 74X164 DM driver for 74LV controlling.
7. Enable PMIC DM driver for 9x9 EVK

Signed-off-by: Ye Li <ye.li@nxp.com>