camera: Add flag for CameraDeviceSetup

Flag for CameraDeviceSetup APIs. See Id281e2365c8 for
the actual APIs.

Bug: 320741775
Test: atest CtsCameraTestCases:android.hardware.camera2.cts.CameraDeviceTest
      passes.
Change-Id: I9fe1bf0970b3b1a90a841e8273363d80b071b63f
diff --git a/camera/camera_platform.aconfig b/camera/camera_platform.aconfig
index bfbc457..0dfcd58 100644
--- a/camera/camera_platform.aconfig
+++ b/camera/camera_platform.aconfig
@@ -104,3 +104,10 @@
      description: "Enable returning graphics buffers to buffer queues without holding the in-flight mutex"
      bug: "315526878"
 }
+
+flag {
+     namespace: "camera_platform"
+     name: "camera_device_setup"
+     description: "Create an intermediate Camera Device class for limited CameraDevice access."
+     bug: "320741775"
+}