plat/qemu: add gicv3 support for qemu

This patch adds gicv3 support for qemu, in order not to break any legacy
use case, gicv2 is still set by default, gicv3 can be selected by
compiling parameter QEMU_USE_GIC_DRIVER=QEMU_GICV3.

Signed-off-by: Hongbo Zhang <hongbo.zhang@linaro.org>
Reviewed-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Tested-by: Radoslaw Biernacki <radoslaw.biernacki@linaro.org>
Change-Id: Ic63f38abf16ed3c36aa60e80d50103cf05cf797b
3 files changed