mlx4_core: device revision support

mlx4_core: device revision support

The device revision field returned by the NodeInfo MAD
is incorrect on ConnectX3 devices.

This patch is driver side handling to complete a FW fix
added at 2.11.1172. INIT_HCA - bit at offset 0x0C.12 is
set to 1 so that FW will report correct device revision.

Older FW versions won't be affected from turning on that bit,
no capability bit is needed.

Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
(Ported from Mellanox OFED 2.4)

Signed-off-by: Mukesh Kacker <mukesh.kacker@oracle.com>