Angus Gratton cccac2cc01 rp2,esp32,extmod: Implement UPDATE_SUBMODULES in CMake. ...

Rather than having Make calling CMake to generate a list of submodules and
then run a Make target (which is complex and prone to masking other
errors), implement the submodule update logic in CMake itself.

Internal CMake-side changes are that GIT_SUBMODULES is now a CMake list,
and the trigger variable name is changed from ECHO_SUBMODULES to
UPDATE_SUBMODULES.

The run is otherwise 100% a normal CMake run now, so most of the other
special casing can be removed.

Signed-off-by: Angus Gratton <angus@redyak.com.au>

2025-03-27 17:51:12 +11:00

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