Add configure time option to enable boot2qt platform using DISTRO_OPTS.
On embedded, the QtWebEngine is supported only on boot2qt platforms.
To have QtWebEngine CI tested on embedded, we need a way to to enable
boot2qt platform for existing mkspecs.
Change-Id: I218da5b8071041ca1c95eb218b2d552fcc9980d2
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Andras Becsi <andras.becsi@theqtcompany.com>
4b5da50b29