[qca-nss-sfe] update PPPoE and VLAN error code strings

Change-Id: I921ce4e456499eb26b69801ce410e8f8db8984ea
Signed-off-by: Nitin Shetty <quic_nitinsj@quicinc.com>
diff --git a/sfe_ipv6.c b/sfe_ipv6.c
index 70f5408..b880d3b 100644
--- a/sfe_ipv6.c
+++ b/sfe_ipv6.c
@@ -87,13 +87,18 @@
 	"IP_OPTIONS_INCOMPLETE",
 	"UNHANDLED_PROTOCOL",
 	"FLOW_COOKIE_ADD_FAIL",
+	"NO_HEADROOM",
+	"INVALID_PPPOE_SESSION",
+	"INCORRECT_PPPOE_PARSING",
+	"PPPOE_NOT_SET_IN_CME",
+	"INGRESS_VLAN_TAG_MISMATCH",
 	"INVALID_SOURCE_INTERFACE",
 	"TUNIPIP6_HEADER_INCOMPLETE",
 	"TUNIPIP6_NO_CONNECTION",
 	"TUNIPIP6_IP_OPTIONS_OR_INITIAL_FRAGMENT",
 	"TUNIPIP6_SMALL_TTL",
 	"TUNIPIP6_NEEDS_FRAGMENTATION",
-	"TUNIPIP6_SYNC_ON_FIND"
+	"TUNIPIP6_SYNC_ON_FIND",
 	"GRE_HEADER_INCOMPLETE",
 	"GRE_NO_CONNECTION",
 	"GRE_IP_OPTIONS_OR_INITIAL_FRAGMENT",