docs-rst: convert kernel-hacking to ReST

Use pandoc to convert documentation to ReST by calling
Documentation/sphinx/tmplcvt script.

- Manually adjusted to use ..note and ..warning
- Minor fixes for it to be parsed without errors
- Use **bold** for emphasis.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
diff --git a/Documentation/index.rst b/Documentation/index.rst
index bc67dbf..01a2448 100644
--- a/Documentation/index.rst
+++ b/Documentation/index.rst
@@ -51,6 +51,7 @@
    process/index
    dev-tools/index
    doc-guide/index
+   kernel-hacking/index
 
 Kernel API documentation
 ------------------------