linux-phytec-fsl

mlxsw: spectrum_router: Rename functions to add / delete a FIB entry

These functions aren't specific to IPv4 and can be re-used for IPv6.

Drop the '4' designation from their name.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>