sdm: Fix HDMI Primary and Virtual Display concurrency use case

When HDMI is Primary and the output format is YUV we should not
compose Virtual Display using SDM. Priority will be given to HDMI
to use hardware for YUV output since only one display can be
supported with YUV output format.

CRs-Fixed: 1011672
Change-Id: I3fae8436aff4bf4da4cf4e8a39c177ab7532c3e5
2 files changed