Redefinition of ARRAY_SIZE macro

[dennismalcorps]

Hello everyone,

while working on integrating the TMC2300 into one of our projects, we got a redefinition warning of the above mentioned macro, because our microcontroller sdk implements this too. After a quick glimpse into your code, it turns out there is a missing #ifndev...#endif around ARRAY_SIZE.

[trinamic-ASU]

Thank you for the suggestion and your valuable feedback. We have fixed this issue now.