pw_graphics: Fix -Wundef finding

Change-Id: I1a3753bfc6e0e6955fd6e9571fcbea0f1bf578cb
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/experimental/+/349319
Pigweed-Auto-Submit: Armando Montanez <amontanez@google.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Armando Montanez <amontanez@google.com>
GitOrigin-RevId: f64c8b74ea4775dc23e9f904c0cfcb59058699fc
diff --git a/pw_graphics/pw_display/public/pw_display/display.h b/pw_graphics/pw_display/public/pw_display/display.h
index 07f277d..f695dbe 100644
--- a/pw_graphics/pw_display/public/pw_display/display.h
+++ b/pw_graphics/pw_display/public/pw_display/display.h
@@ -23,6 +23,11 @@
 
 namespace pw::display {
 
+// This should get updated to use the proper Pigweed config pattern.
+#ifndef DISPLAY_RESIZE
+#define DISPLAY_RESIZE 0
+#endif  // DISPLAY_RESIZE
+
 /// @ingroup pw_display
 ///
 /// The display is an object that represents a single display (or screen)