Merge tag 'sh-pfc-for-v4.20-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: sh-pfc: Updates for v4.20

  - Add SATA and audio pin groups on R-Car M3-N,
  - Add EtherAVB pin groups on RZ/G1C,
  - Add PWM and display (DU) pin groups on R-Car E3,
  - Add support for the new RZ/G2M (r8a774a1) SoC.