I2C: ls1043a, ls1046a: enable SYS_I2C_MXC

This enables SYS_I2C_MXC to fix a bug that
failed to boot from sd card with
image u-boot-with-spl-pbl.bin

Signed-off-by: Biwen Li <biwen.li@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
3 files changed