qemu_v8.mk: Add option to compile with GICv3

QEMU supports the virtualization extensions only in emulated
GICv3. So, add an option to build TF-A, OP-TEE with GICv3.
To enable this, use GICV3=y with make.

Signed-off-by: Ruchika Gupta <ruchika.gupta@linaro.org>
Reviewed-by: Jerome Forissier <jerome@forissier.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
diff --git a/qemu-check.exp b/qemu-check.exp
index 3cb5414..23f315d 100644
--- a/qemu-check.exp
+++ b/qemu-check.exp
@@ -45,7 +45,7 @@
 spawn -open [open "|tail -f serial1.log"]
 set teecore $spawn_id
 if {[string first "aarch64" $::env(QEMU)] != -1} {
-	spawn $::env(QEMU) -nographic -serial mon:stdio -serial file:serial1.log -smp $::env(QEMU_SMP) -machine virt,secure=on -cpu cortex-a57 -d unimp -semihosting-config enable=on,target=native -m 1057 -bios bl1.bin -initrd rootfs.cpio.gz -kernel Image -no-acpi -append "console=ttyAMA0,38400 keep_bootcon root=/dev/vda2"
+	spawn $::env(QEMU) -nographic -serial mon:stdio -serial file:serial1.log -smp $::env(QEMU_SMP) -machine virt,secure=on,gic-version=$::env(QEMU_GIC) -cpu cortex-a57 -d unimp -semihosting-config enable=on,target=native -m 1057 -bios bl1.bin -initrd rootfs.cpio.gz -kernel Image -no-acpi -append "console=ttyAMA0,38400 keep_bootcon root=/dev/vda2"
 } else {
 	spawn $::env(QEMU) -nographic -monitor none -machine virt -machine secure=on -cpu cortex-a15 -smp $::env(QEMU_SMP) -d unimp -semihosting-config enable=on,target=native -m 1057 -serial stdio -serial file:serial1.log -bios $bios
 }