QEMU with SDL 1.2 display used to enable keyboard and mouse grab-
bing when started in full screen. The SDL 2.0 code tries to do
the same but fails to enable grabbing because sdl_grab_start(0)
returns early. To do it's work the sdl_grab_start() function
needs a pointer to a sdl2_console structure.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200516072014.7766-7-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>