Add proper forward declarations to minimize dependencies on
other header files.
Just add enough that we can safely include all header files in
alphabetically order in relevant files.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190519195526.3422-4-sam@ravnborg.org
Right now, all we need to know about the blitter is that it's not doing
anything that can be messed up when fiddling with MMU mappings.
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>