net/mlx4_core: Add masking for a few queries on HCA caps

net/mlx4_core: Add masking for a few queries on HCA caps

commit a40ded6043658444ee4dd6ee374119e4e98b33fc upstream.

Driver reads the query HCA capabilities without the corresponding masks.
Without the correct masks, the base addresses of the queues are
unaligned.  In addition some reserved bits were wrongly read.  Using the
correct masks, ensures alignment of the base addresses and allows future
firmware versions safe use of the reserved bits.

Fixes: ab9c17a009ee ("mlx4_core: Modify driver initialization flow to accommodate SRIOV for Ethernet")
Fixes: 0ff1fb654bec ("{NET, IB}/mlx4: Add device managed flow steering firmware API")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.16:
 - There are no num_sys_eqs or dmfs_high_steer_mode parameters
 - Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>