[mundane] Expose MD5 and RC4 APIs in `boringssl-sys` crate.

This change exposes APIs used by upstream changes to Mundane. In
particular, MD5 and RC4 APIs are included in the whitelist to support
legacy features exposed in Mundane's `insecure` module.

Change-Id: I21ef8b5edff0e0a5e0cbb36f9e2dfae1150d12ca
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/boringssl/+/411201
Commit-Queue: Sean Olson <seanolson@google.com>
Reviewed-by: Drew Fisher <zarvox@google.com>
diff --git a/rust/boringssl-sys/bindgen.sh b/rust/boringssl-sys/bindgen.sh
index 15b6862..7aa3165 100755
--- a/rust/boringssl-sys/bindgen.sh
+++ b/rust/boringssl-sys/bindgen.sh
@@ -54,7 +54,7 @@
 # Whitelist BoringSSL-related symbols so we don't get non-BoringSSL symbols such
 # as platform-specific symbols (specific to the platform that is running
 # 'bindgen') and other C standard library symbols.
-WHITELIST="(ERR|BIO|CRYPTO|RAND|V_ASN1|ASN1|B_ASN1|CBS_ASN1|CAST|EVP|CBS|CBB|CIPHER|OPENSSL|SSLEAY|DH|DES|DIGEST|DSA|NID|EC|ECDSA|ECDH|ED25519|X25519|PKCS5_PBKDF2|SHA|SHA1|SHA224|SHA256|SHA384|SHA512|HMAC|RSA|BN)_.*"
+WHITELIST="(ERR|BIO|CRYPTO|RAND|V_ASN1|ASN1|B_ASN1|CBS_ASN1|CAST|EVP|CBS|CBB|CIPHER|OPENSSL|SSLEAY|DH|DES|DIGEST|DSA|NID|EC|ECDSA|ECDH|ED25519|X25519|PKCS5_PBKDF2|SHA|SHA1|SHA224|SHA256|SHA384|SHA512|HMAC|RSA|BN|RC4|MD5)_.*"
 # NOTE(joshlf) on --target: Currently, we just pass x86_64 since none of the
 # symbols we're linking against are architecture-specific (they may be
 # word-size-specific, but Fuchsia only targets 64-bit platforms). If this ever