f1bb9cfbf6 added this value, but it was
only when a test in qtdeclarative tried to use it that it was
discovered that it couldn't be set on 32 bit operating systems (armv7,
AKA imx7) due to overflow as a result of the bit shifting that is done.
Fix it by using an old, deprecated value. If any old codebase using
that older flag tries to build against a newer Qt with this change, it
shouldn't affect it, as setting the flag does nothing in Widgets, and
native menus didn't exist in earlier versions.
Task-number: QTBUG-69558
Change-Id: I520154d02e9ccf007ebd73807685212a19fbee1b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>