drm/msm/dp: fix hdcp status update

As debug sub-module is initialized after hdcp sub-module, do not
update debug sub-module's data during hdcp sub-module initialization.

Change-Id: I91eccf157f4745095e3157636ed4f8012707c62a
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Abhijith Desai <desaia@codeaurora.org>