APPLIED: [Trusty] fix build error in gpio-dwapb patch

[Kamal Mostafa]

On Fri, 2014-07-25 at 14:48 -0600, Tim Gardner wrote:
> Actually cherry picked from commit c7861f37b4c63b7f45d37b113acabbf352597c46
> 
> Kamal - stable material ?

Nope, not this one.  Although Trusty does carry the GPIO_DWAPB driver,
it didn't actually land in mainline until 3.14 (7779b34).  It doesn't
exist in 3.13-stable so no further action needed here.

Thanks anyway!

 -Kamal