msm_fb: mdss: DSI driver code clean-up

Remove mmss_cc base variable. This is no more needed.
Create new controller platform data. Move the needed
variables as part of the controller pdata structure.

Change-Id: Ic5c72911dbfe889e1f8ff6992d438b6631796507
Signed-off-by: Chandan Uddaraju <chandanu@codeaurora.org>