Intra mode info for NxN partition units is now stored in the corresponding 4x4 cell in lcu_t.cu array.
It can be inferred from the position and size of the CU.
Moves checks for motion vector prediction and merge candidate block types (inter/intra) from functions kvz_inter_get_mv_cand and kvz_inter_get_merge_cand to kvz_inter_get_spatial_merge_candidates.