docs/sp_SP: Add process coding-style translation

Translate Documentation/process/coding-style.rst into Spanish.

Signed-off-by: Carlos Bilbao <carlos.bilbao@amd.com>
Link: https://lore.kernel.org/r/20221124170242.1892751-7-carlos.bilbao@amd.com


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