irqchip: GICv3: ITS: enable compilation of the ITS driver

Get the show on the road...

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Link: https://lkml.kernel.org/r/1416839720-18400-13-git-send-email-marc.zyngier@arm.com


Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Hanumant Singh <hanumant@codeaurora.org>
Git-commit: 1981272912c211d668c0f62ffee4f5acc55c3bdd
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


[pujag@codeaurora.org: resolve trivial merge conflict]
Signed-off-by: Puja Gupta <pujag@codeaurora.org>