Pin control changes for the v6.9 kernel cycle:

No core changes this time around.

New drivers:

- New driver for Renesas R8A779H0 also known as R-Car V4M.

- New driver for the Awinic AW9523/B I2C GPIO expander.
  I found this living out-of-tree in OpenWrt as an upstream
  attempt had stalled on the finishing line, so I picked it
  up and finished the job.

Improvements:

- The Nomadik pin control driver was for years re-used out of
  tree for the ST STA chips, and now the IP was re-used in a
  MIPS automotive SoC called MobilEyeq5, so it has been split
  in pin control and GPIO drivers so the latter can be reused
  by MobilEyeq5. (Along with a long list of cleanups.)

- A lot of overall cleanup and tidying up.
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