[Matrix]: add SpMM for mem_col_dense_matrix back.
[Matrix]: add SpMM for mem_col_dense_matrix back.

icoming/FlashX,icoming/FlashX,zheng-da/FlashX,zheng-da/FlashX,icoming/FlashX,flashxio/FlashX,icoming/FlashGraph,icoming/FlashX,zheng-da/FlashX,icoming/FlashGraph,flashxio/FlashX,flashxio/FlashX,icoming/FlashGraph,zheng-da/FlashX,icoming/FlashGraph,flashxio/FlashX,icoming/FlashGraph,zheng-da/FlashX,icoming/FlashX,flashxio/FlashX,flashxio/FlashX