trinity: needs MMU support

Fixes:
  http://autobuild.buildroot.net/results/2fc/2fca707deb6fda2da83ab817f8e594f76415d997/



Cc: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>