linux-imx

RDMA/ocrdma: Add missing adapter mailbox opcodes

Fix the Statistics command opcode. Also specify the opcode of each
command for better readablilty.

Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>