msm: vidc: access CVP NOC register only for supported HW

Currently, video driver is accessing CVP NOC register for all
video HW which might cause invalid memory access.
Fix this by accessing CVP NOC register only for HW which
supports CVP.

Change-Id: I5588b452455b592b8156ea4f46cb8e3171e14947
Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>