net/sfc: fix inner TCP/UDP checksum offload control
net/sfc: fix inner TCP/UDP checksum offload control

If application uses Tx offload API and sets ETH_TXQ_FLAGS_IGNORE flag,
it still should have inner TCP/UDP checksum offload enabled if it is
supported and TCP/UDP checksum offload is requested.

Fixes: c78d280e88ef ("net/sfc: convert to new Tx offload API")
Cc: stable@dpdk.org

Signed-off-by: Andrew Rybchenko <ac94ab2a8fe9a9a087f6e24dcbc16626b52c07e8@solarflare.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk