Update the gpu_metrics interface implementations to use the latest
upgraded data structures.

V2: fit the data type change of energy_accumulator
Signed-off-by: NEvan Quan <evan.quan@amd.com>
Reviewed-by: NLijo Lazar <lijo.lazar@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>