drm/lima: save task info dump when task fail

Save all information to start a task which can be exported to user
for debug usage. Dump file data format is specified in lima_dump.h

v2:
Add include header to address build robot complain.

Tested-by: Andreas Baierl <ichgeh@imkreisrum.de>
Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200307134423.24329-1-yuq825@gmail.com