JVET-AD0056 Item 6: move nnpfc_inp_order_idc and nnpfc_out_order_idc
Move nnpfc_inp_order_idc and nnpfc_out_order_idc before the bit depth syntax elements, and gate the bit depth syntax elements
Move nnpfc_inp_order_idc and nnpfc_out_order_idc before the bit depth syntax elements, and gate the bit depth syntax elements