[Blackfin] serial driver: Fix bug Poll RTS/CTS status in DMA mode as well

https://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3858

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>

diff --git a/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h b/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h
index a1b4f4e..b6f513b 100644
--- a/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h
+++ b/include/asm-blackfin/mach-bf533/bfin_serial_5xx.h
@@ -56,12 +56,12 @@
 	unsigned int		rx_dma_channel;
 	struct work_struct	tx_dma_workqueue;
 #else
-	struct work_struct 	cts_workqueue;
 # if ANOMALY_05000230
 	unsigned int anomaly_threshold;
 # endif
 #endif
 #ifdef CONFIG_SERIAL_BFIN_CTSRTS
+	struct work_struct 	cts_workqueue;
 	int			cts_pin;
 	int			rts_pin;
 #endif