wil6210: rate limit wil_rx_refill error

wil_err inside wil_rx_refill can flood the log buffer.
Replace it with wil_err_ratelimited.

Change-Id: I0744428a29851e347ce54de9af75f3a9141fe5ea
Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c
index 62d1d07..dcec343 100644
--- a/drivers/net/wireless/ath/wil6210/txrx.c
+++ b/drivers/net/wireless/ath/wil6210/txrx.c
@@ -636,8 +636,8 @@
 			v->swtail = next_tail) {
 		rc = wil_vring_alloc_skb(wil, v, v->swtail, headroom);
 		if (unlikely(rc)) {
-			wil_err(wil, "Error %d in wil_rx_refill[%d]\n",
-				rc, v->swtail);
+			wil_err_ratelimited(wil, "Error %d in rx refill[%d]\n",
+					    rc, v->swtail);
 			break;
 		}
 	}