zephyr_dt_inputs_outputs.svg still shows the output from dtc being used,
but dtc is unused (except for finding warnings/errors) after the old
devicetree scripts were removed in commit c8c35f76ab ("scripts: dts:
Remove deprecated extract_dts_includes.py script").
Update zephyr_dt_inputs_outputs.svg to show how things are done now.
Also include the new zephyr.dts debugging aid in it. Tweak the
formatting a bit too.
Add zephyr.dts to the diagram in the build overview section too, and
mention zephyr.dts in the text of the devicetree and build overview
pages.
Remove zephyr_dt_inputs_outputs.png and use zephyr_dt_inputs_outputs.svg
directly. Many other places the documentation include SVGs directly, and
there haven't been any complaints, so it probably works fine. The .png
and .svg versions had also drifted out of sync.
Piggyback a link from the devicetree page to the build overview page, to
make it easier to discover.
(I used draw.io to update the diagrams.)
Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>