Add coding standards document to guides directory. This document
codifies the current DPDK C coding conventions, to make it easier for
contributors to see the format their code should be in.
Signed-off-by: Siobhan Butler <siobhan.a.butler@intel.com>
Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
Acked-by: Thomas Monjalon <thomas.monjalon@6wind.com>