sdm: Use Lut indexes directly from HWScaleData

The modification of the lut indexes will be taken care by the
extension library, hence directly assign the lut indexes to
the mdp scale v2 structure.

Change-Id: If0ccc401aab0c371ca4805e2cef5f22c8399e4e7
Crs-fixed: 1107694
1 file changed