Merge changes I68941876,Ib7961812,I758661d3,I4f3e3812,I9b26b838, ... into integration

Merge changes I68941876,Ib7961812,I758661d3,I4f3e3812,I9b26b838, ... into integration

* changes:
  rcar_gen3: drivers: ddr-a: Fix E3 DDR init coding style
  rcar_gen3: drivers: ddr-a: Pass ddrBackup around
  rcar_gen3: drivers: ddr-a: Inline ddr_init_e3.h
  rcar_gen3: drivers: ddr-a: Fix V3M DDR init coding style
  rcar_gen3: drivers: ddr-a: Fix D3 DDR init coding style
  rcar_gen3: drivers: ddr-a: Replace {Read,Write}Reg_32() with mmio_{read,write}_32()
  rcar_gen3: drivers: ddr-a: Unify register definitions