hal: Update check to include DISPLAY Port RX backend

-For HDMI or Display port, before configuring the backend with
stream configuration, it is suppose to be validated against the
edid of the connected device.
-As display port check was missing, this lead to bypass of the
edid validation, leading to no audio on certain display port
sinks.
-Update the check to include DISPLAY port along with HDMI.

Change-Id: I8b5ba0b16cf05048418f43cf7995c7a96d9f0f16