doc: describe the analysis of crash dumps

Provide an overview of the analysis of U-Boot crash dumps.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/doc/develop/index.rst b/doc/develop/index.rst
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index 0000000..072db63
--- /dev/null
+++ b/doc/develop/index.rst
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+.. SPDX-License-Identifier: GPL-2.0+
+
+Develop U-Boot
+==============
+
+
+.. toctree::
+   :maxdepth: 2
+
+   crash_dumps