V4L/DVB: ir: prepare IR code for a parameter change at register function

A latter patch will reuse the ir_input_register with a different meaning.
Before it, change all occurrences to a temporary name.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
index 99cad82..5d4ddc9 100644
--- a/drivers/media/IR/ir-keytable.c
+++ b/drivers/media/IR/ir-keytable.c
@@ -461,7 +461,7 @@
 }
 
 /**
- * ir_input_register() - sets the IR keycode table and add the handlers
+ * __ir_input_register() - sets the IR keycode table and add the handlers
  *			    for keymap table get/set
  * @input_dev:	the struct input_dev descriptor of the device
  * @rc_tab:	the struct ir_scancode_table table of scancode/keymap
@@ -471,7 +471,7 @@
  * It will register the input/evdev interface for the device and
  * register the syfs code for IR class
  */
-int ir_input_register(struct input_dev *input_dev,
+int __ir_input_register(struct input_dev *input_dev,
 		      const struct ir_scancode_table *rc_tab,
 		      const struct ir_dev_props *props,
 		      const char *driver_name)
@@ -539,7 +539,7 @@
 	kfree(ir_dev);
 	return rc;
 }
-EXPORT_SYMBOL_GPL(ir_input_register);
+EXPORT_SYMBOL_GPL(__ir_input_register);
 
 /**
  * ir_input_unregister() - unregisters IR and frees resources