kernel: Consider depmod version when handling kernel modules

* This fixes dirty boot image rebuilding on devices
  with CONFIG_LOCALVERSION_AUTO=y and any driver
  set to =m.
* Basically appending `cat include/config/kernel.release`
  to modules path makes sure that our find does not
  return old modules which would make cp fail with
  'cp: will not overwrite just-created' message.

Change-Id: Ifb79d33b95d7671d8b2d6633644c8b8290d1f442