drm/amd/display: Update clock table to include highest clock setting

drm/amd/display: Update clock table to include highest clock setting

[Why]
Currently, the clk manager matches SocVoltage with voltage from
fused settings (dfPstate clock table). And then corresponding clocks
are selected.

However in certain situations, this leads to clk manager not
including at least one entry with highest supported clock setting.

[How]
Update the clk manager to include at least one entry with highest
supported clock setting.

Reviewed-by: Pavle Kotarac <[email protected]>
Acked-by: Qingqing Zhuo <[email protected]>
Signed-off-by: Swapnil Patel <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>