mi: split EQ popping and event processing into two functions.

mieqProcessInputEvents() - pop an event off the EQ and pass it to
mieqProcessDeviceEvent() - process the event according to the MD/SD hierarchy.

This way, we can use mieqPDE() from Xtest, xkb, and others to post an event.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

mi/mi.h

@@ -211,6 +211,12 @@ extern _X_EXPORT void mieqSwitchScreen(
     Bool /*fromDIX*/
 );
 
+extern _X_EXPORT void mieqProcessDeviceEvent(
+    DeviceIntPtr /* dev*/,
+    InternalEvent* /* event */,
+    ScreenPtr /* screen*/
+);
+
 extern _X_EXPORT void mieqProcessInputEvents(
     void
 );