triggers: refactor: move dmode checking of tdata1 to module_t

The tdata1.dmode is defined at the same level of tdata1.type. As a
result, all triggers has a tdata1.dmode field (even the disabled
trigger).

With the above consideration, we move the tdata1.dmode checking and
setting to the same level of tdata1.type, i.e., in module_t.