ixgbe: don't clear IPsec sa counters on HW clearing

mainline inclusion
from mainline-4.20
commit 9e3f2f5e
category: bugfix
bugzilla: 6120
CVE: NA

-------------------------------------------------

The software SA record counters should not be cleared when clearing
the hardware tables.  This causes the counters to be out of sync
after a driver reset.

Fixes: 63a67fe2 ("ixgbe: add ipsec offload add and remove SA")
Signed-off-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Keefe LIU <liuqifa@huawei.com>
Reviewed-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>