allwinner: extend support for H5 CPU (sun50i-h5)

[TzeWey]

Fixes #21

Tested on a custom target but not all IOs. Verified GPIO Port A and Port C1 are working.

[codecov-commenter]

Codecov Report

Merging #22 (f0696c3) into main (79c7463) will not change coverage. The diff coverage is n/a.

@@          Coverage Diff          @@
##            main     #22   +/-   ##
=====================================
  Coverage   34.3%   34.3%           
=====================================
  Files         51      51           
  Lines       7992    7992           
=====================================
  Hits        2744    2744           
  Misses      5117    5117           
  Partials     131     131           

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[maruel]

Thanks!