sfc: replace function name in string with __func__

Minor fix to existing code to make later patch checkpatch clean.

Signed-off-by: Jonathan Cooper <jonathan.s.cooper@amd.com>
Acked-by: Martin Habets <habetsm.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 file changed