Mark VP8E_SET_ARNR_TYPE as being deprecated

In a future release we plan to remove the
option of setting the ARNR filter type.

This patch marks this control as being deprecated
as advance warning that it will be removed from
the API at some point.

Change-Id: I5dcca804b44c7c93b1a10da7d69d19ba6061869c

vpx/vp8cx.h

@@ -162,8 +162,10 @@ enum vp8e_enc_control_id {
   VP8E_SET_ARNR_MAXFRAMES,         /**< control function to set the max number of frames blurred creating arf*/
   VP8E_SET_ARNR_STRENGTH,          //!< control function to set the filter
                                    //!< strength for the arf
-  VP8E_SET_ARNR_TYPE,              //!< control function to set the type of
-                                   //!< filter to use for the arf
+
+  /*!\deprecated control function to set the filter type to use for the arf */
+  VP8E_SET_ARNR_TYPE,
+
   VP8E_SET_TUNING,                 /**< control function to set visual tuning */
   /*!\brief control function to set constrained quality level
    *
@@ -349,7 +351,7 @@ VPX_CTRL_USE_TYPE(VP8E_SET_TOKEN_PARTITIONS,   int) /* vp8e_token_partitions */
 
 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_MAXFRAMES,     unsigned int)
 VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_STRENGTH,     unsigned int)
-VPX_CTRL_USE_TYPE(VP8E_SET_ARNR_TYPE,     unsigned int)
+VPX_CTRL_USE_TYPE_DEPRECATED(VP8E_SET_ARNR_TYPE,     unsigned int)
 VPX_CTRL_USE_TYPE(VP8E_SET_TUNING,             int) /* vp8e_tuning */
 VPX_CTRL_USE_TYPE(VP8E_SET_CQ_LEVEL,      unsigned int)