drm/amdgpu/pm: Update metrics table (v2)

v2: removed static dpm and frequency ranges from table

expand metrics table with voltages and frequency ranges

Signed-off-by: David M Nieto <david.nieto@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>