When browser was requested to go to another formset, it also needs to update the...

When browser was requested to go to another formset, it also needs to update the hiihandle in Selection structure. If not update this handle, later when call function GetIfrBinaryData to get binary ifr data will return failed.
Also add sample code to use it.

Signed-off-by: ydong10
Reviewed-by: lgao4
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12607 6f19259b-4bc3-4df7-8a09-765794883524