gic: do not use global gic data in fiq init

gic: do not use global gic data in fiq init

The global gic_data is referenced directly, due to which only one gic
controller can be registered in fiq init. Replacing it with
gic_chip_data pointer which is being passed as one of the arguments.

bug 1500636

Change-Id: Ib986771846384aa58a8eb66bd085866ca715cf21
Signed-off-by: Ajay Nandakumar <anandakumarm@nvidia.com>
Reviewed-on: http://git-master/r/662713
Reviewed-by: Dmitry Pervushin <dpervushin@nvidia.com>
Tested-by: Dmitry Pervushin <dpervushin@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>