wwan_hwsim: Use skb_put_data() instead of skb_put/memcpy pair

Use skb_put_data() instead of skb_put() and memcpy(), which is clear.
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Link: https://lore.kernel.org/r/20220927024511.14665-1-shangxiaojing@huawei.comSigned-off-by: Paolo Abeni <pabeni@redhat.com>

drivers/net/wwan/wwan_hwsim.c

@@ -157,8 +157,8 @@ static int wwan_hwsim_port_tx(struct wwan_port *wport, struct sk_buff *in)
 			if ((i + 1) < in->len && in->data[i + 1] == '\n')
 				i++;
 			n = i - s + 1;
-			memcpy(skb_put(out, n), &in->data[s], n);/* Echo */
-			memcpy(skb_put(out, 6), "\r\nOK\r\n", 6);
+			skb_put_data(out, &in->data[s], n);/* Echo */
+			skb_put_data(out, "\r\nOK\r\n", 6);
 			s = i + 1;
 			port->pstate = AT_PARSER_WAIT_A;
 		} else if (port->pstate == AT_PARSER_SKIP_LINE) {
@@ -171,7 +171,7 @@ static int wwan_hwsim_port_tx(struct wwan_port *wport, struct sk_buff *in)
 	if (i > s) {
 		/* Echo the processed portion of a not yet completed command */
 		n = i - s;
-		memcpy(skb_put(out, n), &in->data[s], n);
+		skb_put_data(out, &in->data[s], n);
 	}
 
 	consume_skb(in);