Add support for iMX8MN LPDDR4 EVK board which uses 2GB LPDDR4 and
PCA9450B PMIC.
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
use CONFIG_TARGET_IMX8MN_DDR4_EVK for DDR4 EVK board, we will use
CONFIG_TARGET_IMX8MN_EVK for LPDDR4 EVK board.
Signed-off-by: Peng Fan <peng.fan@nxp.com>