ANDROID: GKI: drm: Initialize display->hdmi when parsing vsdb

When parsing HDMI Forum Vendor-Specific Data Block ensure that
connector->hdmi is also initialized with data from the vsdb. Currently
the code only intializes connector properties.

Bug: 152417756
Change-Id: Iabebd6e0500bfac99c96e27990044737c2870959
Signed-off-by: Alistair Delva <adelva@google.com>