msm: mdss: hdmi: Initialize HDCP2.2 feature irrespective of QFPROM support

The HDCP 2.2 feature was being initialized only if QFPROM keys are present.
This is not required for HDCP 2.2, only for 1.4. Instead, added gating for
initialization of HDCP 2.2 feature by the version of HDMI Tx controller.
HDMI Tx controller version 4.0.0 and above supports HDCP 2.2 auth.

Change-Id: I7f2fae06ed09f3fde638faa416c926a038edbd76
Signed-off-by: Alhad Purnapatre <alhadp@codeaurora.org>