Enforce Authentication for incoming HID connection

Enforce Authentication in addition to encryption for all incoming
HID connections.

Bug 17887668

Change-Id: Ib0d6cd6d8e793823c541a1b4468dcce89f297181
(cherry picked from commit 6d6502909c1dd1766db1fea2cb638866e137a7bf)

btif/src/btif_hh.c

@@ -1711,7 +1711,7 @@ bt_status_t btif_hh_execute_service(BOOLEAN b_enable)
      if (b_enable)
      {
           /* Enable and register with BTA-HH */
-          BTA_HhEnable(BTA_SEC_ENCRYPT, bte_hh_evt);
+          BTA_HhEnable(BTUI_HH_SECURITY, bte_hh_evt);
      }
      else {
          /* Disable HH */