powerpc: Mark low level irq handlers NO_THREAD

[Scott Wood]

On Mon, 2013-08-12 at 16:48 +0200, Sebastian Andrzej Siewior wrote:
> From: Thomas Gleixner <tglx at linutronix.de>
> 
> These low level handlers cannot be threaded. Mark them NO_THREAD
> 
> Reported-by: leroy christophe <christophe.leroy at c-s.fr>
> Tested-by: leroy christophe <christophe.leroy at c-s.fr>
> Signed-off-by: Thomas Gleixner <tglx at linutronix.de>
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy at linutronix.de>
> ---
> 
> This patch has been posted on Feb 13, 2013 and nobody responded back then.

It went in v3.11-rc1.

-Scott