net/ice: fix outer checksum flags

net/ice: fix outer checksum flags

When received tunneled packets, the testpmd output log shows 'ol_flags'
value always is 'PKT_RX_OUTER_L4_CKSUM_UNKNOWN', but expected value is
'PKT_RX_OUTER_L4_CKSUM_GOOD' or 'PKT_RX_OUTER_L4_CKSUM_BAD'.

Add the 'PKT_RX_OUTER_L4_CKSUM_GOOD' and 'PKT_RX_OUTER_L4_CKSUM_BAD' to
'flags' for normal path, 'l3_l4_flags_shuf' for AVX2 and AVX512 vector
path and 'cksum_flags' for SSE vector path to ensure that the 'ol_flags'
can match correct flags.

Fixes: dbf3c0e77a22 ("net/ice: handle Rx flex descriptor")
Fixes: 4ab7dbb0a0f6 ("net/ice: switch to Rx flexible descriptor in AVX path")
Fixes: ece1f8a8f1c8 ("net/ice: switch to flexible descriptor in SSE path")
Cc: stable@dpdk.org
Signed-off-by: Murphy Yang <murphyx.yang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>