Adding tests for SGIs and timers in primary VM.

Bug: 117270899
Change-Id: I879917099c3085fff2a0fd9a17ac8cef04c9977f
diff --git a/test/vm/hftest.py b/test/vm/hftest.py
index 92e85e0..ac0f247 100755
--- a/test/vm/hftest.py
+++ b/test/vm/hftest.py
@@ -35,7 +35,7 @@
 def qemu(hafnium, initrd, args, log):
     qemu_args = [
         "timeout", "--foreground", "5s",
-        "./prebuilts/linux-x64/qemu/qemu-system-aarch64", "-M", "virt", "-cpu",
+        "./prebuilts/linux-x64/qemu/qemu-system-aarch64", "-M", "virt,gic_version=3", "-cpu",
         "cortex-a57", "-m", "16M", "-machine", "virtualization=true",
         "-nographic", "-nodefaults", "-serial", "stdio", "-kernel", hafnium,
         "-initrd", initrd