Change the behavior of the HII Library function HiiGetHiiHandles() when the PackageLi...

Change the behavior of the HII Library function HiiGetHiiHandles() when the PackageListGuid parameter is not NULL. The original behavior is that if this parameter is not NULL at most 1 HII Handle is returned. Behavior after change is if this parameter is not NULL zero or more HII Handles associated with PackageListGuid are returned, because it is possible that there are multiple package lists with same package list GUID in the HII Database.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9393 6f19259b-4bc3-4df7-8a09-765794883524