media: cinergyt2: make properties const

The dvb_usb_device_properties can be const. This makes it clear that
the static can be shared across threads.

Signed-off-by: Sean Young <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/usb/dvb-usb/cinergyT2-core.c

···
 	unsigned char data[64];
 };
 
-/* We are missing a release hook with usb_device data */
-static struct dvb_usb_device *cinergyt2_usb_device;
-
-static struct dvb_usb_device_properties cinergyt2_properties;
+/* Forward declaration */
+static const struct dvb_usb_device_properties cinergyt2_properties;
 
 static int cinergyt2_streaming_ctrl(struct dvb_usb_adapter *adap, int enable)
 {
···
 		deb_rc("cinergyt2_power_ctrl() Failed to retrieve sleep state info\n");
 	}
 	mutex_unlock(&d->data_mutex);
-
-	/* Copy this pointer as we are gonna need it in the release phase */
-	cinergyt2_usb_device = adap->dev;
 
 	return ret;
 }
···
 
 MODULE_DEVICE_TABLE(usb, cinergyt2_usb_table);
 
-static struct dvb_usb_device_properties cinergyt2_properties = {
+static const struct dvb_usb_device_properties cinergyt2_properties = {
 	.size_of_priv = sizeof(struct cinergyt2_state),
 	.num_adapters = 1,
 	.adapter = {