[media] az6027: get rid of warning: no previous prototype

drivers/media/usb/dvb-usb/az6027.c:1054:5: warning: no previous prototype for 'az6027_identify_state' [-Wmissing-prototypes]
drivers/media/usb/dvb-usb/az6027.c:301:5: warning: no previous prototype for 'az6027_usb_in_op' [-Wmissing-prototypes]

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/usb/dvb-usb/az6027.c

@@ -298,7 +298,8 @@ struct stb6100_config az6027_stb6100_config = {
 
 
 /* check for mutex FIXME */
-int az6027_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value, u16 index, u8 *b, int blen)
+static int az6027_usb_in_op(struct dvb_usb_device *d, u8 req,
+			    u16 value, u16 index, u8 *b, int blen)
 {
 	int ret = -1;
 	if (mutex_lock_interruptible(&d->usb_mutex))
@@ -1051,10 +1052,10 @@ static struct i2c_algorithm az6027_i2c_algo = {
 	.functionality = az6027_i2c_func,
 };
 
-int az6027_identify_state(struct usb_device *udev,
-			  struct dvb_usb_device_properties *props,
-			  struct dvb_usb_device_description **desc,
-			  int *cold)
+static int az6027_identify_state(struct usb_device *udev,
+				 struct dvb_usb_device_properties *props,
+				 struct dvb_usb_device_description **desc,
+				 int *cold)
 {
 	u8 *b;
 	s16 ret;