Add support for GRO functionality for TCP packets.
- Pass GRO config to DP layer as a part of dp_update_config_parameters
- Add API to read the number of active RX contexts from DP layer
cdp_get_num_rx_contexts
- Fill GRO info into skb->cb from rx_tlv during dp_rx_process
CRs-Fixed: 2346995
Change-Id: I1c143d8ce2c7522ba2c76142fb6cc82193df5608