add new i386 socket syscall numbers

new in linux v4.3 commit 9dea5dc921b5f4045a18c63eb92e84dc274d17eb
direct calls instead of socketcall allow better seccomp filtering.

musl continues to use socketcalls internally on i386. (older kernels
would need a fallback mechanism if the direct calls were used.)

arch/i386/bits/syscall.h

@@ -357,6 +357,21 @@
 #define __NR_memfd_create	356
 #define __NR_bpf		357
 #define __NR_execveat		358
+#define __NR_socket		359
+#define __NR_socketpair		360
+#define __NR_bind		361
+#define __NR_connect		362
+#define __NR_listen		363
+#define __NR_accept4		364
+#define __NR_getsockopt		365
+#define __NR_setsockopt		366
+#define __NR_getsockname	367
+#define __NR_getpeername	368
+#define __NR_sendto		369
+#define __NR_sendmsg		370
+#define __NR_recvfrom		371
+#define __NR_recvmsg		372
+#define __NR_shutdown		373
 
 
 /* Repeated with SYS_ prefix */
@@ -720,3 +735,18 @@
 #define SYS_memfd_create	356
 #define SYS_bpf			357
 #define SYS_execveat		358
+#define SYS_socket		359
+#define SYS_socketpair		360
+#define SYS_bind		361
+#define SYS_connect		362
+#define SYS_listen		363
+#define SYS_accept4		364
+#define SYS_getsockopt		365
+#define SYS_setsockopt		366
+#define SYS_getsockname		367
+#define SYS_getpeername		368
+#define SYS_sendto		369
+#define SYS_sendmsg		370
+#define SYS_recvfrom		371
+#define SYS_recvmsg		372
+#define SYS_shutdown		373