linux-imx

xprtrdma: Clean up rpcrdma_bc_marshal_reply()

Same changes as in rpcrdma_marshal_req(). This removes
C-structure style encoding from the backchannel.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>