nokia: 00WW_5_220

* CAF tag LA.UM.6.6.r1-04000-89xx.0 (Android 8.0)
* Restore removed .gitignore files, keep file permission changes
* LA.UM.6.6.r1-04000-89xx.0 Android security patch level 2017-09-05
  https://source.codeaurora.org/quic/la/platform/build/tree/core/version_defaults.mk?h=LA.UM.6.6.r1-04000-89xx.0#n168
* Nokia Android security patch level 2018-01-01