drm/amd/display: Add support for 2nd sharpening range

[Why & How]
Add support for 2nd sharpening range for cases where we want
override existing DCN sharpening range

Reviewed-by: Ilya Bakoulin <ilya.bakoulin@amd.com>
Signed-off-by: Samson Tam <Samson.Tam@amd.com>
Signed-off-by: Wayne Lin <wayne.lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>