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/dvb/ttpci/budget-ci.c b/drivers/media/dvb/ttpci/budget-ci.c
index 7d193eb..9c9070a 100644
--- a/drivers/media/dvb/ttpci/budget-ci.c
+++ b/drivers/media/dvb/ttpci/budget-ci.c
@@ -286,7 +286,7 @@
 	return 0;
 
 out2:
-	ir_input_free(input_dev);
+	ir_input_unregister(input_dev);
 	input_free_device(input_dev);
 out1:
 	return error;
@@ -304,7 +304,7 @@
 	del_timer_sync(&dev->timer);
 	ir_input_nokey(dev, &budget_ci->ir.state);
 
-	ir_input_free(dev);
+	ir_input_unregister(dev);
 	input_unregister_device(dev);
 }