net/ice: fix flow priority support in non-pipeline mode

net/ice: fix flow priority support in non-pipeline mode

Lower values denote higher priority with 0 as the maximum.
The usage of priority in non-pipeline mode is wrong.

This patch fixed this issue in switch filter and added input
validation of priority in FDIR, RSS and ACL filter which
only support one priority level.

Fixes: 2321e34c23b3 ("net/ice: support flow priority for DCF switch filter")
Cc: stable@dpdk.org
Signed-off-by: Yuying Zhang <yuying.zhang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>