Move DisplayIdentification parsing to libui

This is so that the logic can be shared with VTS, as stable display IDs
are generated from edid information or port information.

Bug: 213493262
Test: VtsHalGraphicsComposer3_TargetTest
Change-Id: Id74a2c646558d61bb1a8ae80b038f7108e54e636
diff --git a/libs/ui/Android.bp b/libs/ui/Android.bp
index 006c478..a5e3731 100644
--- a/libs/ui/Android.bp
+++ b/libs/ui/Android.bp
@@ -123,6 +123,7 @@
     srcs: [
         "DebugUtils.cpp",
         "DeviceProductInfo.cpp",
+        "DisplayIdentification.cpp",
         "DisplayMode.cpp",
         "DynamicDisplayInfo.cpp",
         "Fence.cpp",