qt5_textedit.run: fix the USB driver configuration

This patch adds the 'uhci', 'ehci' and 'xhci' XML attributes to the USB
driver configuration in the 'qt5_textedit.run' script.

Fixes #1110.
stdcxx: build 'tinfo.cc'

The 'tinfo.cc' file needs to get built, because it implements
'std::type_info::operator==(std::type_info const&) const', which
is needed by the 'icu' library on ARM.

Fixes #1109.
run: change resolution of virtualbox_auto_disk

We changed the test hardware and the new one does not support 1400x1050 anymore.
Choose some conservative resolution since this is anyway a auto test nobody
is really looking at the screen output.