ANDROID: trusty-irq: enqueue work in trusty_irq_cpu_up

Temporary workaround blindly enqueuing work to force trusty scheduler
to run after a cpu suspend.
Root causing the workqueue being inappropriately empty (e.g. loss of an IPI)
may make this workaround unnecessary in the future.

Bug: 197458307
Change-Id: Ice8497c9027666a320ada8aa9c15195e31237201
Signed-off-by: Armelle Laine <armellel@google.com>