Revert "Revert "Calculate ro.vendor.api_level with the new vendo..."

Revert submission 2863786-trunk_vendor_api_level

Reason for revert: Reland the ro.vendor.api_level update

Reverted changes: /q/submissionid:2863786-trunk_vendor_api_level

Change-Id: I1f380e04f673eb4570e598a6e2013fce6e69213e
1 file changed