V4L/DVB (8467): cx23885: Minor cleanup to the debuging output for a specific register.

Don't display the register when it's not appropriate for the specific port.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/cx23885/cx23885-core.c b/drivers/media/video/cx23885/cx23885-core.c
index b96016d..83067a4 100644
--- a/drivers/media/video/cx23885/cx23885-core.c
+++ b/drivers/media/video/cx23885/cx23885-core.c
@@ -1011,8 +1011,9 @@
 		port->reg_gpcnt_ctl, cx_read(port->reg_gpcnt_ctl));
 	dprintk(1, "%s() dma_ctl(0x%08X)        0x%08x\n", __func__,
 		port->reg_dma_ctl, cx_read(port->reg_dma_ctl));
-	dprintk(1, "%s() src_sel(0x%08X)        0x%08x\n", __func__,
-		port->reg_src_sel, cx_read(port->reg_src_sel));
+	if (port->reg_src_sel)
+		dprintk(1, "%s() src_sel(0x%08X)        0x%08x\n", __func__,
+			port->reg_src_sel, cx_read(port->reg_src_sel));
 	dprintk(1, "%s() lngth(0x%08X)          0x%08x\n", __func__,
 		port->reg_lngth, cx_read(port->reg_lngth));
 	dprintk(1, "%s() hw_sop_ctrl(0x%08X)    0x%08x\n", __func__,