Android W -> B for finalization scripts

Android 16 is B, not W.

Bug: 384614121
Test: build/make/tools/finalization/build-step-0.sh --steps_for_build_test_only
Change-Id: Ib9fcdda063cb0b9589b1e54244726c2011175bed
Merged-In: Ib9fcdda063cb0b9589b1e54244726c2011175bed
diff --git a/compatibility_matrices/Android.bp b/compatibility_matrices/Android.bp
index 825c931..19f4839 100644
--- a/compatibility_matrices/Android.bp
+++ b/compatibility_matrices/Android.bp
@@ -147,6 +147,6 @@
     stem: "compatibility_matrix.202504.xml",
     srcs: ["compatibility_matrix.202504.xml"],
     kernel_configs: [
-        "kernel_config_w_6.12",
+        "kernel_config_b_6.12",
     ],
 }