V4L/DVB (13616): IR: rename ir_input_free as ir_input_unregister

Now, ir_input_free does more than just freeing the keytab. Better to
rename it as ir_input_unregister.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index 2856e78..9d8e78d 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -460,7 +460,7 @@
 	return 0;
 
  err_out_free:
-	ir_input_free(input_dev);
+	ir_input_unregister(input_dev);
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
@@ -474,7 +474,7 @@
 	cancel_delayed_work_sync(&ir->work);
 
 	/* unregister device */
-	ir_input_free(ir->input);
+	ir_input_unregister(ir->input);
 	input_unregister_device(ir->input);
 
 	/* free memory */