drm/amd/pm: Update pm attr for gc_9_5_0

Update power management & clk attributes for gc_v_9_5_0

Signed-off-by: Asad Kamal <asad.kamal@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>