Merge branch 'cxgb4-rdma'

Raju Rangoju says:

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Add support for RDMA enhancements in cxgb4

Allocates the HW-resources and provide the necessary routines for the
upper layer driver (rdma/iw_cxgb4) to enable the RDMA SRQ support for
Chelsio adapters.

Advertise support for write with immediate work request
Advertise support for write with completion

v3: modified memory allocation as per Stefano's suggestion

v2: fixed the patching issues and also
    fixed the following based on review comments of Stefano Brivio
 - using kvzalloc instead of vzalloc
 - using #define instead of enum
====================

Signed-off-by: David S. Miller <davem@davemloft.net>