This commit introduces a number of infrastructures in ena-com, some of
which are being used as of ENA v2.7.0 while other certain infrastructure
assets have been made available for potential future application.
Upgrade ena-com to include the following changes:
- Introduce customer metrics infrastructures
- Introduce SRD metrics infrastructures
- Remove unused fields from ena_com_io_cq and ena_com_io_sq structs
- Minor rework of ena_com_fill_hash_function
- Introduce PHC infrastructures
- Update the licenses for ena-com files
- Delete duplicate *_defs.h found in ena-com and ena_defs directories
- Add validation for completion descriptors consistency
- Move ena_fbsd_log.h file to ena_plat.h
MFC after: 2 weeks
Sponsored by: Amazon, Inc.