NSS API changes for VLAN 802.1p marking, DSCP marking, and per-direction QoS for a rule

CRs-Fixed: 661976

Description:

a.) Two new fields in structure nss_ipv4/6_qos_rule, to have qos_tag per
    flow direction. Older qos_tag field removed.
b.) Two new fields in structure nss_ipv4/6_dscp_rule to have egress
    DSCP setting per direction
c.) Remoevd older 802.1p and DSCP fields from nss_ipv4/6_dscp_rule
    and nss_ipv4/6_vlan_rule
c.) Corresponding changes in nss_api.h and nss_tx_rx_ipv4/6.c

Change-Id: I60a9310d4b904efd6da353a61f1843db17638e59
Signed-off-by: Kiran Kumar C.  S. K <kkumarcs@codeaurora.org>
7 files changed