wpa_supplicant(interface): Add iface/network type

Add separate types of Iface/Network object for STA (station mode) and
P2P mode ifaces and associated networks. These expose very different
functionality and exposing 2 different types of objects makes the
interface cleaner.
Although, they're still represented via the same struct for both types
in the wpa_supplicant core.

Bug: 32553421
Test: ./hardware/interfaces/update-makefiles.sh
Change-Id: I41601a650709429c65014cb7adaf6cb9ab03787e
diff --git a/wifi/supplicant/1.0/ISupplicantP2pIfaceCallback.hal b/wifi/supplicant/1.0/ISupplicantP2pIfaceCallback.hal
new file mode 100644
index 0000000..1574e6a
--- /dev/null
+++ b/wifi/supplicant/1.0/ISupplicantP2pIfaceCallback.hal
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.0;
+
+/**
+ * Callback Interface exposed by the wpa_supplicant service
+ * for each P2P mode interface (ISupplicantP2pIface).
+ *
+ * Clients need to host an instance of this HIDL interface object and
+ * pass a reference of the object to wpa_supplicant via the
+ * corresponding |ISupplicantP2pIface.registerCallback| method.
+ */
+interface ISupplicantP2pIfaceCallback {
+  /**
+   * Used to indicate that a new network has been added.
+   *
+   * @param id Network ID allocated to the corresponding network.
+   */
+  oneway onNetworkAdded(SupplicantNetworkId id);
+
+  /**
+   * Used to indicate that a network has been removed.
+   *
+   * @param id Network ID allocated to the corresponding network.
+   */
+  oneway onNetworkRemoved(SupplicantNetworkId id);
+};