net/mlx5e: Take common TIR context settings into a function

Many TIR context settings are common to different TIR types,
take them into a common function.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>