Merge https://gitlab.denx.de/u-boot/custodians/u-boot-mpc85xx

Support of device tree model for T2080RDB, T4240RDB, T1024RDB,
T1042D4RDB, P1020RDB, P2020RDB, P2041RDB, P3041DS, P4080DS, P5040DS and
MPC8548CDS. Also support of  i2c dm model.