Camera: Update metadata docs to match current API

Test: Builds
Bug: 150036107
Change-Id: I3e5321e91458d980ad96d3665d9f11bbafb047f1
diff --git a/camera/metadata/3.5/types.hal b/camera/metadata/3.5/types.hal
index 4e2252c..60563e2 100644
--- a/camera/metadata/3.5/types.hal
+++ b/camera/metadata/3.5/types.hal
@@ -72,7 +72,7 @@
 
     ANDROID_CONTROL_END_3_5,
 
-    /** android.scaler.availableRotateAndCropModes [static, byte[], public]
+    /** android.scaler.availableRotateAndCropModes [static, byte[], hidden]
      *
      * <p>List of rotate-and-crop modes for ANDROID_SCALER_ROTATE_AND_CROP that are supported by this camera device.</p>
      *
@@ -80,7 +80,7 @@
      */
     ANDROID_SCALER_AVAILABLE_ROTATE_AND_CROP_MODES = android.hardware.camera.metadata@3.4::CameraMetadataTag:ANDROID_SCALER_END_3_4,
 
-    /** android.scaler.rotateAndCrop [dynamic, enum, public]
+    /** android.scaler.rotateAndCrop [dynamic, enum, hidden]
      *
      * <p>Whether a rotation-and-crop operation is applied to processed
      * outputs from the camera.</p>