linux-phytec-ti

sunrpc: add _print_rpc_iostats() to output metrics for one RPC op

Refactor the output of the metrics for one RPC op into an internal
function.  No functional change.

Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>