qcacmn: Setup CDP interface for flushing RX queue

Refactor flush rx queue function call based on soc by adding an
interface to CDP funtion indirection table.

Change-Id: Iea201553f555a6c317cf37e586433aa493e51623
CRs-fixed: 2023399

dp/inc/cdp_txrx_ops.h

@@ -192,6 +192,7 @@ struct cdp_cmn_ops {
 	void (*set_vdev_dscp_tid_map)(struct cdp_vdev *vdev_handle,
 			uint8_t map_id);
 
+	void (*flush_cache_rx_queue)(void);
 	void (*set_pdev_dscp_tid_map)(struct cdp_pdev *pdev, uint8_t map_id,
 			uint8_t tos, uint8_t tid);