libxscale: Add support for posting verbs

This patch adds support for post_send and post_recv routines.

Signed-off-by: Tian Xin <tianx@yunsilicon.com>
Signed-off-by: Wei Honggang <weihg@yunsilicon.com>
Signed-off-by: Zhao Qianwei <zhaoqw@yunsilicon.com>
Signed-off-by: Li Qiang <liq@yunsilicon.com>
Signed-off-by: Yan Lei <jacky@yunsilicon.com>

Author: tianx666

providers/xscale/cq.c

@@ -112,11 +112,6 @@ static void *get_sw_cqe(struct xsc_cq *cq, int n)
 		return NULL;
 }
 
-void *xsc_get_send_wqe(struct xsc_qp *qp, int n)
-{
-	return qp->sq_start + (n << qp->sq.wqe_shift);
-}
-
 static void update_cons_index(struct xsc_cq *cq)
 {
 	struct xsc_context *ctx =