ANDROID: Run VTS HAL for HWC on AVD drm_hwc postsubmit

To make sure that drm_hwc is HAL compliant, run
VtsHalGraphicsComposer3_TargetTest.
The test runs in post submit for the time being as
GetDisplayConfigurations_hasHdrType is currently failing. When it
passes, move the test to AVD presubmit.

Bug: b/383125262
Test: N/A
Flag: TEST_ONLY
Change-Id: I4271d359153d6a5fbeeb456d7aeb7ab6d0addc55

TEST_MAPPING

diff --git a/TEST_MAPPING b/TEST_MAPPING
new file mode 100644
index 0000000..dc01a00
--- /dev/null
+++ b/TEST_MAPPING
@@ -0,0 +1,12 @@
+{
+  "postsubmit": [
+    {
+      "name": "VtsHalGraphicsComposer3_TargetTest"
+    }
+  ],
+  "desktop-postsubmit": [
+    {
+      "name": "VtsHalGraphicsComposer3_TargetTest"
+    }
+  ]
+}
\ No newline at end of file