drm/msm/sde: fix register debug range printing

Add checks to sde debug facility to reject poorly formed
register block ranges. Add names for dsc and vbif register
blocks. Register the vbif hw block under the vbif base register.
Fix the names of the printed register blocks to be 0 based as
expected. Fix the DSC register length initialization. Sort
register ranges before printing. Register mdp top block
address before dumping the sde debug bus.

Change-Id: I0179d59543de52537937abcc7d556f79569e9c55
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>