am 67467172: Merge "print MTU size after get MTU request from iphone." into klp-modular-dev

* commit '6746717209435aac27eedeebdf67da1a1fbc5e5a':
  print MTU size after get MTU request from iphone.
diff --git a/stack/gatt/gatt_sr.c b/stack/gatt/gatt_sr.c
index 88040fe..c006dd2 100644
--- a/stack/gatt/gatt_sr.c
+++ b/stack/gatt/gatt_sr.c
@@ -929,6 +929,8 @@
         else
             p_tcb->payload_size = mtu;
 
+        GATT_TRACE_ERROR1("MTU request PDU with MTU size %d", p_tcb->payload_size);
+
         if ((p_buf = attp_build_sr_msg(p_tcb, GATT_RSP_MTU, (tGATT_SR_MSG *) &p_tcb->payload_size)) != NULL)
         {
             attp_send_sr_msg (p_tcb, p_buf);