ecore-evas: Fix cursor position getting reset to 0,0 when using

ecore-evas: Fix cursor position getting reset to 0,0 when using
ecore_evas_cursor_object_set

NB: Previously, if we mad calls to ecore_evas_cursor_object_set to update the
mouse cursor hotspot, the mouse cursor would be repositioned at 0,0 on
the canvas due to x & y being set to 0,0. We fix that here by fetching
the current mouse position Regardless if we are changing the object or
not (ie: perhaps we are just updating the hotspot and not the object)

@fix

Signed-off-by: Chris Michael <cp.michael@samsung.com>