Fix Windows/aarch64

Author: justsmth

aws-lc-sys/builder/cc_builder/win_aarch64.rs

@@ -22,4 +22,6 @@ pub(super) const CRYPTO_LIBRARY: &[&str] = &[
     "generated-src/win-aarch64/crypto/fipsmodule/sha512-armv8.S",
     "generated-src/win-aarch64/crypto/fipsmodule/vpaes-armv8.S",
     "generated-src/win-aarch64/crypto/test/trampoline-armv8.S",
+    "third_party/s2n-bignum/s2n-bignum-to-be-imported/arm/aes/aes-xts-dec.S",
+    "third_party/s2n-bignum/s2n-bignum-to-be-imported/arm/aes/aes-xts-enc.S",
 ];