[RESTRICT AUTOMERGE] Add relative address to DeviceProductInfo.

This CL adds a field relativeAddress to DeviceProductInfo so it can
be surfaced in the framework. For HDMI connections the field is
populated with the physical address.

Bug: 147994746
Test: atest DisplayIdentificationTest
Change-Id: I2711407aa1be079df8086e233ee3f0cf90ba1741
diff --git a/services/surfaceflinger/DisplayHardware/DisplayIdentification.h b/services/surfaceflinger/DisplayHardware/DisplayIdentification.h
index fc2f72e..9e6c549 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayIdentification.h
+++ b/services/surfaceflinger/DisplayHardware/DisplayIdentification.h
@@ -70,7 +70,7 @@
 };
 
 struct HdmiVendorDataBlock {
-    std::optional<HdmiPhysicalAddress> physicalAddress;
+    HdmiPhysicalAddress physicalAddress;
 };
 
 struct Cea861ExtensionBlock : ExtensionBlock {