drm/radeon/kms: add quirk to make HP DV5000 laptop resume

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=29062



Reported-by: Andres Cimmarusti <acimmarusti@gmail.com>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>