Add SO_PASSRIGHTS

Introduced in the linux kernel here[1]

[1] https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1b98f357dadd

Author: ltworf

Modules/socketmodule.c

@@ -8257,6 +8257,9 @@ socket_exec(PyObject *m)
 #ifdef  SO_BINDTODEVICE
     ADD_INT_MACRO(m, SO_BINDTODEVICE);
 #endif
+#ifdef  SO_PASSRIGHTS
+    ADD_INT_MACRO(m, SO_PASSRIGHTS);
+#endif
 #ifdef  SO_BINDTOIFINDEX
     ADD_INT_MACRO(m, SO_BINDTOIFINDEX);
 #endif