cris: switch to generic fork/vfork/clone

same braindamage as on s390 - the first two arguments of clone(2) in the
wrong order.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/cris/Kconfig b/arch/cris/Kconfig
index 81b59d1..0cac6a4 100644
--- a/arch/cris/Kconfig
+++ b/arch/cris/Kconfig
@@ -51,6 +51,7 @@
 	select MODULES_USE_ELF_RELA
 	select GENERIC_KERNEL_THREAD
 	select GENERIC_KERNEL_EXECVE
+	select CLONE_BACKWARDS2
 
 config HZ
 	int