When I switched AGL over to using upstream OE's template unit scheme for
running weston as non-root for the zeus upgrade, I missed the dependency
in afm-system-setup.service, update it to weston@display.service to
match the new configuration.
Bug-AGL: SPEC-3309
Signed-off-by: Scott Murray <scott.murray@konsulko.com>
Change-Id: Ifef4d63be3326fb6d36eb997cb2bc331c49a1250