arm: Kconfig: Switch XEA (imx287 based) board to use CONFIG_PL01X_SERIAL

The CONFIG_PL011 used by all other ARCH_MX28 based boards is not
supporting DM_SERIAL. Instead, other define - namely CONFIG_PL01X_SERIAL
shall be used by boards supporting DM_SERIAL.

Signed-off-by: Lukasz Majewski <lukma@denx.de>
2 files changed