Merge changes I3c0a402f,I9ce5b9df,I08719015,If541278f,I99f1a697 into integration

* changes:
  doc: renesas: Update code owner for Renesas platforms
  doc: renesas: Document platforms based on RZ/G2 SoC's
  renesas: rzg: Add PFC support for RZ/G2M
  renesas: rzg: Add QoS support for RZ/G2M
  renesas: rzg: Add support for DRAM initialization