travis.yml: Rework the aarch64 jobs

With the new QEMU from Ubuntu Focal, we can now run some more tests
with TCG. Also switch the second build job to native arm64, so we
can use Clang to compile these tests to get some additional compiler
test coverage.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201001072234.143703-8-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/.travis.yml b/.travis.yml
index 547d8d7..5af7344 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -76,14 +76,21 @@
       env:
       - CONFIG="--arch=arm64 --cross-prefix=aarch64-linux-gnu-"
       - BUILD_DIR="."
-      - TESTS="selftest-vectors-kernel selftest-vectors-user selftest-smp"
+      - TESTS="cache gicv2-active gicv2-ipi gicv3-active gicv3-ipi pci-test
+          pmu-cycle-counter pmu-event-counter-config pmu-sw-incr psci
+          selftest-setup selftest-smp selftest-vectors-kernel
+          selftest-vectors-user timer"
 
-    - addons:
-        apt_packages: gcc-aarch64-linux-gnu qemu-system-aarch64
+    - arch: arm64
+      addons:
+        apt_packages: clang-10 qemu-system-aarch64
+      compiler: clang
       env:
-      - CONFIG="--arch=arm64 --cross-prefix=aarch64-linux-gnu-"
+      - CONFIG="--arch=arm64 --cc=clang-10"
       - BUILD_DIR="arm64-buildir"
-      - TESTS="pci-test pmu gicv2-active gicv3-active psci timer selftest-setup"
+      - TESTS="cache gicv2-active gicv2-ipi gicv3-active gicv3-ipi pci-test
+          pmu-cycle-counter pmu-event-counter-config pmu-sw-incr selftest-setup
+          selftest-smp selftest-vectors-kernel selftest-vectors-user timer"
 
     - addons:
         apt_packages: gcc-powerpc64le-linux-gnu qemu-system-ppc