We need to reset the poll modulation list before calling
nfc_targets_found because otherwise userspace could run
before the modulation list is cleared and then get a "Cannot
activate target while polling" error upon calling activate_target.
Signed-off-by: NMichael Thalmeier <michael.thalmeier@hale.at>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>