I am trying to build a downstream kernel from sources (3.18.31), and my `bitbake virtual/kernel` errors with: 

```
kernel-source/arch/arm/kernel/hibernate.c:74:9: error: too many arguments to function ' cpu_suspend'
```

Would somebody have a hint on what could be wrong? Am I missing a package? It's the first time I write a BSP (doing it as a learning experience), and I am not sure what to do, any hint would be appreciated 🙂