net/mlx5: EQ, irq_info and rmap belong to eq_table

irq_info and rmap are EQ properties of the driver, and only needed for
EQ objects, move them to the eq_table EQs database structure.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>