It is useful for the caller to know whether the uihelper has handled the
event passed so that it can skip other event handling code if so.
(Bitbake rev: be498abfbbb19bdd31e5b53713a74049007e3737)
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>