Support multiple

If the parent element is multiple even though the element is not
multiple, it must be set to multiple. As a result, the element is
changed to multiple and the APIs are changed.

Bug: 128380795
Test: m -j && make check-api
Merged-In: Ifce1e86a91c23eee5ec945b36c7fc97a5db26c8a
Change-Id: Ifce1e86a91c23eee5ec945b36c7fc97a5db26c8a
(cherry picked from commit 85fc3f47)