drm/msm/sde: propagate dump_all request when using work queue

Propagate the dump_all request to the sde debug dump request
when the dump is posted to a work queue.

Change-Id: I753d2bcfb9eabb4829a7a218bdb4912c2b362286
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>