potter: add rild socket shim

Change-Id: I2583d4c913130d8a20ce1e7381dd8eba9478a950

libshims/Android.mk

@@ -48,3 +48,12 @@ LOCAL_MODULE := libshims_get_process_name
 LOCAL_MODULE_TAGS := optional
 
 include $(BUILD_SHARED_LIBRARY)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := rild_socket.c
+
+LOCAL_MODULE := rild_socket
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_SHARED_LIBRARY)

libshims/rild_socket.c

@@ -0,0 +1,19 @@
+/*
+ * Copyright (C) 2017 The LineageOS 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.
+ */
+
+#define MAX_SOCKET_NAME_LENGTH 6
+
+char rild[MAX_SOCKET_NAME_LENGTH] = "rild";