Merge changes I46cd4d9b,Iba009587,I41d146e8,Ic66ceab3,Iff46838a, ... into integration

* changes:
  drivers: renesas: rcar: io: Code cleanup
  drivers: renesas: rcar: pwrc: Code cleanup
  drivers: renesas: rcar: common: Code cleanup
  drivers: renesas: rcar: watchdog: Fix typo
  drivers: renesas: rcar: scif: Fix coding style
  drivers: renesas: rcar: iic_dvfs: Fix coding style