Add android-info.txt to OTA/ subdir of target_files.zip

This information will be provided by an explicit `Android_info` property
on `andorid_device`. An alternative would be to propagate this
information from vendor_partition dependency, but that might run into
issues if android_info.txt is no longer used a prop file input for
building vendor's build.prop file

Test: diff'd target_files.zip of make and soong
Fixes: 388633397
Change-Id: Iaacffd0526b6ce7a7ce1566774753d4e20d9f9a2