Add inaddr.h header file

Change-Id: Iad92c39fb729538cf51bf9d9037b15515104b453
diff --git a/libc/include/arpa/inet.h b/libc/include/arpa/inet.h
index db054c9..7716b94 100644
--- a/libc/include/arpa/inet.h
+++ b/libc/include/arpa/inet.h
@@ -33,6 +33,7 @@
 #include <stdint.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
+#include <inaddr.h>
 
 __BEGIN_DECLS
 
diff --git a/libc/include/bits/in_addr.h b/libc/include/bits/in_addr.h
index 30eb04b..3e46dad 100644
--- a/libc/include/bits/in_addr.h
+++ b/libc/include/bits/in_addr.h
@@ -36,8 +36,7 @@
 #include <sys/cdefs.h>
 #include <stdint.h>
 
-/** An integral type representing an IPv4 address. */
-typedef uint32_t in_addr_t;
+#include <inaddr.h>
 
 /** A structure representing an IPv4 address. */
 struct in_addr {
diff --git a/libc/include/inaddr.h b/libc/include/inaddr.h
new file mode 100644
index 0000000..524adda
--- /dev/null
+++ b/libc/include/inaddr.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _INADDR_H_
+#define _INADDR_H_
+
+#include <stdint.h>
+
+typedef uint32_t in_addr_t;
+
+#endif