unbreak networking code for sparc

This commit 1e2e4ac6193ffe0900bd392fa3c596883771eb34 breaks networking
on sparc systems. In Linux the socket functions are declared, but not
implemented and must be routed through socketcall().

Tested via Qemu 2.0.0.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/inet/socketcalls.c

@@ -31,6 +31,27 @@
 #define SYS_ACCEPT4     18
 #endif
 
+#ifdef __sparc__
+#undef __NR_accept
+#undef __NR_accept4
+#undef __NR_bind
+#undef __NR_connect
+#undef __NR_getpeername
+#undef __NR_getsockname
+#undef __NR_getsockopt
+#undef __NR_listen
+#undef __NR_recv
+#undef __NR_recvfrom
+#undef __NR_recvmsg
+#undef __NR_send
+#undef __NR_sendmsg
+#undef __NR_sendto
+#undef __NR_setsockopt
+#undef __NR_shutdown
+#undef __NR_socket
+#undef __NR_socketpair
+#endif
+
 #ifdef L_accept
 static int __NC(accept)(int sockfd, struct sockaddr *addr, socklen_t *addrlen)
 {