[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.cpp b/services/surfaceflinger/DisplayHardware/DisplayIdentification.cpp
index b6d904f..4dfc743 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayIdentification.cpp
+++ b/services/surfaceflinger/DisplayHardware/DisplayIdentification.cpp
@@ -96,6 +96,12 @@
         info.manufactureOrModelDate = date;
     }
 
+    if (edid.cea861Block && edid.cea861Block->hdmiVendorDataBlock) {
+        const auto& address = edid.cea861Block->hdmiVendorDataBlock->physicalAddress;
+        info.relativeAddress = {address.a, address.b, address.c, address.d};
+    } else {
+        info.relativeAddress = DeviceProductInfo::NO_RELATIVE_ADDRESS;
+    }
     return info;
 }