V4L/DVB: IR: export ir_keyup so imon driver can use it directly

The imon driver currently reimplements its own version of ir_keyup
(along with key release timer functionality also already present in the
core IR code). A follow-up imon patch will make use of ir_keyup and the
IR stack's key release code.

Trivial extraction from David Härdeman's pending rc-core merge and
device interface abstraction patchset to facilitate merging a patch
based on his imon input dev split patch ahead of the larger churn, which
is slated for post-2.6.37-rc1 (after Dmitry's large keycode patches are
merged in mainline).

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

drivers/media/IR/ir-keytable.c

@@ -285,7 +285,7 @@ EXPORT_SYMBOL_GPL(ir_g_keycode_from_table);
  * This routine is used to signal that a key has been released on the
  * remote control. It reports a keyup input event via input_report_key().
  */
-static void ir_keyup(struct ir_input_dev *ir)
+void ir_keyup(struct ir_input_dev *ir)
 {
 	if (!ir->keypressed)
 		return;
@@ -295,6 +295,7 @@ static void ir_keyup(struct ir_input_dev *ir)
 	input_sync(ir->input_dev);
 	ir->keypressed = false;
 }
+EXPORT_SYMBOL_GPL(ir_keyup);
 
 /**
  * ir_timer_keyup() - generates a keyup event after a timeout

include/media/ir-core.h

@@ -157,6 +157,7 @@ void ir_input_unregister(struct input_dev *input_dev);
 
 void ir_repeat(struct input_dev *dev);
 void ir_keydown(struct input_dev *dev, int scancode, u8 toggle);
+void ir_keyup(struct ir_input_dev *ir);
 u32 ir_g_keycode_from_table(struct input_dev *input_dev, u32 scancode);
 
 /* From ir-raw-event.c */