octeontx2-af: fix inner LC ltype match for RSS flowkey

Inner LC ltypes differ from outer LC ltypes, but RSS flowkey programming
was using outer LC IP/IP6 ltype masks for inner IP keys.

For inner IPv4/IPv6, match only the base IP ltype and do not include
extension-header matches. Keep existing outer LC masks unchanged.

This fixes inner-tunnel RSS key calculation and prevents mismatches in
inner IP flow classification.

Signed-off-by: kmahammadraf <kmahammadraf@marvell.com>
Signed-off-by: Kiran Kumar K <kirankumark@marvell.com>
Signed-off-by: Dave Miller <davem@davem-thinkpadp1gen8.ibmlond.csb>