docs/sp_SP: Add process submitting-patches translation

Translate Documentation/process/submitting-patches.rst into Spanish.
Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com>
Link: https://lore.kernel.org/r/20221107150815.296699-1-carlos.bilbao@amd.comSigned-off-by: Jonathan Corbet <corbet@lwn.net>

Documentation/translations/sp_SP/index.rst

@@ -78,3 +78,4 @@ Traducciones al español
    :maxdepth: 1
 
    howto
+   submitting-patches