Documentation: Make lenovo codenames human readable

Use rst parser to convert the csv to markdown tables.

Change-Id: I7fd61bd7a4e8818901520311332ae4027e7a7d02
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32250
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>

Documentation/mainboard/index.md

@@ -51,6 +51,7 @@ The boards in this section are not real mainboards, but emulators.
 
 ## Lenovo
 
+- [Mainboard codenames](lenovo/codenames.md)
 - [Hardware Maintenance Manual of ThinkPads](lenovo/thinkpad_hmm.md)
 - [T4xx common](lenovo/t4xx_series.md)
 - [X2xx common](lenovo/x2xx_series.md)

Documentation/mainboard/lenovo/codenames.md

@@ -0,0 +1,7 @@
+# Lenovo mainboard codenames
+
+```eval_rst
+.. csv-table::
+   :header: "Marketing name", "Development codename"
+   :file: codenames.csv
+```