Introduction of the new SAP-UIM socket

Added new socket connection for communication between the SAP module
in Telephony and User Identity Module with DSDA support.

New classes added are:

RilSocket
---------
Base class(virtual) for any type of socket. Has listen
and commands callbacks similar to that of the existing
telephony->rild socket.

RilSapSocket
------------
Derived class for socket for communication between BT SAP
and the sim module in the modem. It initialises
socket, calls Sap_Uim_Init to get the handles and
starts the socket thread.

rilSocketQueue
--------------
Queue for managing socket requests.

Change-Id: I8828173941d6ae76f1f9cc0d567efaf41a77d175
diff --git a/ril/libril/ril_ex.h b/ril/libril/ril_ex.h
new file mode 100644
index 0000000..8e15d65
--- /dev/null
+++ b/ril/libril/ril_ex.h
@@ -0,0 +1,48 @@
+/*
+* Copyright (C) 2014 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.
+*/
+
+#ifndef RIL_EX_H_INCLUDED
+#define RIL_EX_H_INCLUDED
+
+#include <telephony/ril.h>
+#include <telephony/record_stream.h>
+
+#define NUM_ELEMS_SOCKET(a)     (sizeof (a) / sizeof (a)[0])
+
+void rilEventAddWakeup_helper(struct ril_event *ev);
+void listenCallback_helper(int fd, short flags, void *param);
+int blockingWrite_helper(int fd, void* data, size_t len);
+
+enum SocketWakeType {DONT_WAKE, WAKE_PARTIAL};
+
+typedef enum {
+    RIL_TELEPHONY_SOCKET,
+    RIL_SAP_SOCKET
+} RIL_SOCKET_TYPE;
+
+typedef struct SocketListenParam {
+    RIL_SOCKET_ID socket_id;
+    int fdListen;
+    int fdCommand;
+    char* processName;
+    struct ril_event* commands_event;
+    struct ril_event* listen_event;
+    void (*processCommandsCallback)(int fd, short flags, void *param);
+    RecordStream *p_rs;
+    RIL_SOCKET_TYPE type;
+} SocketListenParam;
+
+#endif