drivers/lis2dh12: Rename CS ad MODE to avoid conflicts
drivers/lis2dh12: Rename CS ad MODE to avoid conflicts

CS and MODE are a bit too generic macros and may conflict with headers
defined by the CPU, like in the QN908x case.

This patch renames them to BUS_CS and BUS_MODE to keep it consistent
with the other BUS names.

ant9000/RIOT,jasonatran/RIOT,ant9000/RIOT,OTAkeys/RIOT,jasonatran/RIOT,kaspar030/RIOT,kaspar030/RIOT,miri64/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,kYc0o/RIOT,OlegHahm/RIOT,jasonatran/RIOT,kYc0o/RIOT,authmillenon/RIOT,kYc0o/RIOT,miri64/RIOT,jasonatran/RIOT,kYc0o/RIOT,OlegHahm/RIOT,authmillenon/RIOT,OlegHahm/RIOT,ant9000/RIOT,miri64/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,miri64/RIOT,ant9000/RIOT,kaspar030/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,authmillenon/RIOT,authmillenon/RIOT,OTAkeys/RIOT,authmillenon/RIOT,kYc0o/RIOT,kaspar030/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,ant9000/RIOT,miri64/RIOT