media: pulse8-cec/rainshadow-cec: make adapter name unique

The CEC adapter name used by the pulse8-cec and rainshadow-cec USB device drivers
was a fixed string, but it should be unique if you connect multiple of these devices
to the same computer.

Use dev_name(&serio->dev) instead, which make it unique again.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/usb/pulse8-cec/pulse8-cec.c

@@ -656,7 +656,7 @@ static int pulse8_connect(struct serio *serio, struct serio_driver *drv)
 
 	pulse8->serio = serio;
 	pulse8->adap = cec_allocate_adapter(&pulse8_cec_adap_ops, pulse8,
-		"HDMI CEC", caps, 1);
+					    dev_name(&serio->dev), caps, 1);
 	err = PTR_ERR_OR_ZERO(pulse8->adap);
 	if (err < 0)
 		goto free_device;

drivers/media/usb/rainshadow-cec/rainshadow-cec.c

@@ -323,7 +323,7 @@ static int rain_connect(struct serio *serio, struct serio_driver *drv)
 
 	rain->serio = serio;
 	rain->adap = cec_allocate_adapter(&rain_cec_adap_ops, rain,
-		"HDMI CEC", caps, 1);
+					  dev_name(&serio->dev), caps, 1);
 	err = PTR_ERR_OR_ZERO(rain->adap);
 	if (err < 0)
 		goto free_device;