Fixed failure in handling large CQ/EQ identifiers in an IOV environment (CR 126856)

Fixed failure in handling large CQ/EQ identifiers in an IOV environment (CR 126856)

In an SR-IOV environment, when creating virtual functions, the driver failed to
issue INIT_LINK mailbox commands properly when attaching to the virtual
functions. The driver will now write into CQ/EQ doorbell registers by taking
both the lower and the possible higher bit CQ/EQ identifier fields into
consideration to comply for with the spec for handling INIT_LINK mailbox
commands.

commit id: 6b5151fd7baec6812fece993ddd7a2cf9fd0125f

Signed-off-by: Maxim Uvarov <maxim.uvarov@oracle.com>