Add 'notice' attribute to prebuilts in Android.bp

Test: development/vndk/snapshot/build.sh && python update.py 27
--local -vv && m -j PRODUCT_EXTRA_VNDK_VERSIONS=27, then make sure
NOTICE files for /system/lib[64]/vndk[-sp]-27 are included in
/system/etc/NOTICE.xml.gz
Bug: 70603439

Change-Id: I54dd13e1c3c46c4f690d62604544c61585807160