RDMA/cxgb4: Make _c4iw_write_mem_dma() static
RDMA/cxgb4: Make _c4iw_write_mem_dma() static

This patch marks the function _c4iw_write_mem_dma() as static
because it is not used outside this file, which fixes the warning:

    drivers/infiniband/hw/cxgb4/mem.c:176:5: warning: no previous prototype for ‘_c4iw_write_mem_dma’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <62a2cbd3422b0d621dafb7ceeff40187aeaed4ed@gmail.com>
Acked-by: Steve Wise <6f43c86433b33e5fe92b209bedebd0f6dba5b49c@opengridcomputing.com>
Reviewed-by: Josh Triplett <c028c213ed5efcf30c3f4fc7361dbde0c893c5b7@joshtriplett.org>
Signed-off-by: Roland Dreier <0d270388f2f92757a5de0f4bd891d3b392c44c4f@purestorage.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs