gn2bp: Add unwind related cflags to cflag_allowlist

Bug: 265913942
Test: ./update_results.sh
Change-Id: I264449b31972e963e7833b0647d5f0634e92756f
diff --git a/tools/gn2bp/gen_android_bp b/tools/gn2bp/gen_android_bp
index 9dc5cdb..592c070 100755
--- a/tools/gn2bp/gen_android_bp
+++ b/tools/gn2bp/gen_android_bp
@@ -139,7 +139,9 @@
   "-fvisibility-inlines-hidden",
   "-fstack-protector",
   "-mno-outline",
-  "-mno-outline-atomics"
+  "-mno-outline-atomics",
+  "-fno-asynchronous-unwind-tables",
+  "-fno-unwind-tables",
 ]
 
 # Linker flags which are passed through to the blueprint.