Upgrade drm_hwcomposer to f638348b22e96e208badb71de52a860d201ee2fb

This project was upgraded with external_updater.
Usage: tools/external_updater/updater.sh update external/drm_hwcomposer
For more info, check https://cs.android.com/android/platform/superproject/main/+/main:tools/external_updater/README.md

Bug: 383346402
Test: TreeHugger
Change-Id: If01d83a02be030c21e820b05782d6c19059668c2
diff --git a/METADATA b/METADATA
index 2d137a9..24845b6 100644
--- a/METADATA
+++ b/METADATA
@@ -9,11 +9,11 @@
   last_upgrade_date {
     year: 2025
     month: 3
-    day: 13
+    day: 14
   }
   identifier {
     type: "Git"
     value: "https://gitlab.freedesktop.org/drm-hwcomposer/drm-hwcomposer"
-    version: "7009cc1909804ef707376441b5b3f986b492d66a"
+    version: "f638348b22e96e208badb71de52a860d201ee2fb"
   }
 }