Small accept4 fixes.

Put the accept4 test in the sorted order, and put the accept4 define in
sorted order.

Also add the missing SYS_RECVMMSG and SYS_SENDMMSG defines.

Change-Id: Iba55354975e0d5027dbee53f6de752c2df719493

libc/include/sys/socket.h

@@ -284,6 +284,7 @@ struct ucred {
 #endif
 
 __socketcall int accept(int, struct sockaddr*, socklen_t*);
+__socketcall int accept4(int, struct sockaddr*, socklen_t*, int);
 __socketcall int bind(int, const struct sockaddr*, int);
 __socketcall int connect(int, const struct sockaddr*, socklen_t);
 __socketcall int getpeername(int, struct sockaddr*, socklen_t*);
@@ -298,7 +299,6 @@ __socketcall int setsockopt(int, int, int, const void*, socklen_t);
 __socketcall int shutdown(int, int);
 __socketcall int socket(int, int, int);
 __socketcall int socketpair(int, int, int, int*);
-__socketcall int accept4(int, struct sockaddr*, socklen_t*, int);
 
 extern ssize_t send(int, const void*, size_t, int);
 extern ssize_t recv(int, void*, size_t, int);

libc/include/sys/socketcalls.h

@@ -48,5 +48,7 @@
 #define SYS_SENDMSG     16              /* sys_sendmsg(2)               */
 #define SYS_RECVMSG     17              /* sys_recvmsg(2)               */
 #define SYS_ACCEPT4     18              /* sys_accept4(2)               */
+#define SYS_RECVMMSG    19              /* sys_recvmmsg(2)              */
+#define SYS_SENDMMSG    20              /* sys_sendmmsg(2)              */
 
 #endif /* _SYS_SOCKETCALLS_H_ */

tests/Android.mk

@@ -39,6 +39,7 @@ test_cflags = \
     -fno-builtin \
 
 libBionicStandardTests_src_files := \
+    accept4_test.cpp \
     buffer_tests.cpp \
     dirent_test.cpp \
     eventfd_test.cpp \
@@ -82,7 +83,6 @@ libBionicStandardTests_src_files := \
     system_properties_test.cpp \
     time_test.cpp \
     unistd_test.cpp \
-    accept4_test.cpp \
 
 libBionicStandardTests_cflags := \
     $(test_cflags) \