As the enable register handlers are shared between the v2 and v3
emulation, their implementation goes into vgic-mmio.c, to be easily
referenced from the v3 emulation as well later.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>