net/ice/base: add ethertype IPv6 check for dummy packet
net/ice/base: add ethertype IPv6 check for dummy packet

In order to support switch rule for ethertype filter
with ipv6 ethertype id, it has to check ethertype and
then find a proper dummy packet. There was a silent
assumption that packet is ipv4, unless src or dst ipv6
address is specified in a flow.

Signed-off-by: Grzegorz Nitka <78a7fbe268ca14de2a86adb117e5811063dc462c@intel.com>
Signed-off-by: Qi Zhang <9e9e58ffa71a29bb7b87766b362515be648fcbe0@intel.com>
Acked-by: Junfeng Guo <4e83c95a099a2e36f95a0baa7b159dfaca2b98e9@intel.com>

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