[PATCH] drm/dp_mst: Fix build on systems with STACKTRACE_SUPPORT=n

[Lyude Paul]

Reviewed-by: Lyude Paul <lyude at redhat.com>

I'll go ahead and push this to drm-misc-next, thanks!

On Mon, 2019-12-02 at 16:20 +0100, Geert Uytterhoeven wrote:
> On Mon, Dec 2, 2019 at 2:41 PM Guenter Roeck <linux at roeck-us.net> wrote:
> > On systems with STACKTRACE_SUPPORT=n, we get:
> > 
> > WARNING: unmet direct dependencies detected for STACKTRACE
> >   Depends on [n]: STACKTRACE_SUPPORT
> >   Selected by [y]:
> >   - STACKDEPOT [=y]
> > 
> > and build errors such as:
> > 
> > m68k-linux-ld: kernel/stacktrace.o: in function `stack_trace_save':
> > (.text+0x11c): undefined reference to `save_stack_trace'
> > 
> > Add the missing deendency on STACKTRACE_SUPPORT.
> > 
> > Fixes: 12a280c72868 ("drm/dp_mst: Add topology ref history tracking for
> > debugging")
> > Cc: Lyude Paul <lyude at redhat.com>
> > Cc: Sean Paul <sean at poorly.run>
> > Signed-off-by: Guenter Roeck <linux at roeck-us.net>
> 
> Acked-by: Geert Uytterhoeven <geert at linux-m68k.org>
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
> 
-- 
Cheers,
	Lyude Paul