net/sfc: relax SW packets/bytes atomic ops memory ordering
net/sfc: relax SW packets/bytes atomic ops memory ordering

No barriers are required when stats are incremented or read.

Fixes: 96fd2bd69b58 ("net/sfc: support flow action count in transfer rules")
Cc: stable@dpdk.org

Signed-off-by: Andrew Rybchenko <4155e7bf8e0185127625dac6d84336299844982f@oktetlabs.ru>

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