dips: msm: configure sde and vbif dbg name

Configure sde and vbif debug bus name when
it is registered instead of while registering
the debugfs node.

Change-Id: I41afeede0b3d725a3b6d164e1c0f22e05f7320ec
Signed-off-by: Dhaval Patel <pdhaval@codeaurora.org>