uml: add missing exports for UML_RANDOM=m

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/um/kernel/ksyms.c

@@ -60,6 +60,11 @@ EXPORT_SYMBOL(os_rcv_fd);
 EXPORT_SYMBOL(run_helper);
 EXPORT_SYMBOL(start_thread);
 
+EXPORT_SYMBOL(add_sigio_fd);
+EXPORT_SYMBOL(ignore_sigio_fd);
+EXPORT_SYMBOL(deactivate_fd);
+EXPORT_SYMBOL(sigio_broken);
+
 #ifdef CONFIG_SMP
 
 /* required for SMP */