HID: nintendo: fix -Werror build

There are a lot of warnings due to unused protocol constants, but I believe
it's good to leave them in the sources for documentation purposes for further
development.

Switch them over from static conts to macros to avoid the warnings.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>