drm/amd/powerplay: add DPMCLOCKS table implementation

This patch adds add DPMCLOCKS table implementation
Rename smu_populate_smc_pptable to smu_populate_smc_tables

Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>