irqdomain: Revert gfp hackery

Reverts: eda7516e1d428 'irqdomain: Correct early allocation of irq
domains with IRQs off'

Now that we distangled the allocations and the enablement of irq
remapping and removed the pointless preempt disabled region from
native_smp_prepare_cpus() we can remove that hackaround

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Cc: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/20141205084147.393737205@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
1 file changed