octeontx2-af: Add support for RSS hashing based on Transport protocol field

commit 328aaa8ea504c8c746079416f26e8311a20c3764 from
git@git.assembla.com:cavium/WindRiver.linux.git

Add support to choose RSS flow key algorithm with IPv4 transport protocol
field included in hashing input data. This will be enabled by default.
There-by enabling 3/5 tuple hash

Change-Id: I0419da0fcd357bdd6fc6ed3fa9673ee1a8278488
Signed-off-by: George Cherian <george.cherian@marvell.com>
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/39557


Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <Sunil.Goutham@cavium.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>