864f5b8937
Move static variable definition (cdevsw) to a more conventional location (the C file it is used in), rather than a header. This fixes the GCC warning, -Wunused-variable ("defined but not used") when the tpm20.h header is included in files other than tpm20.c (e.g., tpm_tis.c). X-MFC-with: r342084 Sponsored by: Dell EMC Isilon