drm/i915/fbdev: Always forward hotplug events

drm/i915/fbdev: Always forward hotplug events

With deferred fbdev setup we always need to forward hotplug events,
even if fbdev isn't fully set up yet. Otherwise the deferred setup
will neer happen.

Originally this check was added in

commit 1c5572b4a6c41df8445c24ffd171ab1dc9e77876 (tag: drm-intel-next-fixes-2016-08-05)
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Wed Jul 13 18:34:45 2016 +0100

    drm/i915/fbdev: Check for the framebuffer before use

But the specific case of the hotplug function blowing up was fixed in

commit bff772d4c79eac2b7a6ae12cc7b7dd5003b74111
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Jun 27 17:19:22 2014 +0200

    drm/fb-helper: Fix hpd vs. initial config races

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170706130023.28417-1-daniel.vetter@ffwll.ch