[Why]
Enhance aux transition debugging information.

[How]
Added Aux request and reply event log.
Signed-off-by: NChiawen Huang <chiawen.huang@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>