Tuner API: remove @FilterConfiguration.PacketType

There are some valid and reserved packet type values, so packet type
should not be enum.

According to specs
ITU-R BT.1869, https://screenshot.googleplex.com/HhktwijUqBF.png
ATSC A/330:2019,https://screenshot.googleplex.com/6ZQdO6HrmAS.png

Bug: 150639580
Test: mmm
Change-Id: Ie879a518635707dc71837fda12d90866faf35dc1