test: hack: disable kernel_set_mempolicy

For a test build

Author: popcornmix

mm/mempolicy.c

@@ -1573,6 +1573,10 @@ static long kernel_set_mempolicy(int mode, const unsigned long __user *nmask,
 	int err;
 
 	err = sanitize_mpol_flags(&lmode, &mode_flags);
+
+printk("%s: mode:%x lmode:%x flags:%x err:%d\n", __func__, mode, lmode, mode_flags, err);
+return 0;
+
 	if (err)
 		return err;