Occupant Awareness HAL definitions.

Occupant awareness default HAL and VTS tests will be added as part of a
separate commit / CL.

Bug: 142383127
Test: Verified that system starts default hal.
Change-Id: I24e1c52c9873fc4e0fc09db24d0def9a04175120
diff --git a/automotive/occupant_awareness/aidl/Android.bp b/automotive/occupant_awareness/aidl/Android.bp
new file mode 100644
index 0000000..6e9e8aa
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/Android.bp
@@ -0,0 +1,13 @@
+aidl_interface {
+    name: "android.hardware.automotive.occupant_awareness",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/automotive/occupant_awareness/*.aidl",
+    ],
+    stability: "vintf",
+    backend: {
+        java: {
+            enabled: false,
+        },
+    }
+}