This allows us to use different GIC types from v2. There are no kernels
which could advertise KVM_CAP_DEVICE_CTRL without the actual ability to
create GIC with it.

GIC version probe code moved to kvm_arm_vgic_probe() which will be used
later.
Signed-off-by: NPavel Fedin <p.fedin@samsung.com>
Reviewed-by: NEric Auger <eric.auger@linaro.org>
Tested-by: NAshok kumar <ashoks@broadcom.com>
Reviewed-by: NPeter Maydell <peter.maydell@linaro.org>
Message-id: 015f4d9e4a8a50dfbdd734c4730558e24a69c6dc.1441784344.git.p.fedin@samsung.com
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>