net/iavf: remove git residue symbol
net/iavf: remove git residue symbol

This extra symbol '+' should be added when patch was reapplied, and the
compiler treats it as unsigned type, so the code still runs well.

Fixes: 84108425054a ("net/iavf: support asynchronous virtual channel message")
Cc: stable@dpdk.org

Signed-off-by: Haiyue Wang <037d5f2d0d83548aebdad8ba0c69c0b30ec44c86@intel.com>
Acked-by: Beilei Xing <7fb7e49de6d75fb4140bfcdada52e66859d93ebd@intel.com>
Acked-by: Radu Nicolau <fa459cf59d47c122ba776e9a6f631c862bf44680@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk