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.com


Signed-off-by: Jonathan Corbet <corbet@lwn.net>