build: expose openssl scrypt functions to addons

Add scrypt functions to the list of exported openssl symbols.

PR-URL: #20816
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>

node.gyp

@@ -616,7 +616,7 @@
               # Categories to export.
               '-CAES,BF,BIO,DES,DH,DSA,EC,ECDH,ECDSA,ENGINE,EVP,HMAC,MD4,MD5,'
               'PSK,RC2,RC4,RSA,SHA,SHA0,SHA1,SHA256,SHA512,SOCK,STDIO,TLSEXT,'
-              'FP_API,TLS1_METHOD,TLS1_1_METHOD,TLS1_2_METHOD',
+              'FP_API,TLS1_METHOD,TLS1_1_METHOD,TLS1_2_METHOD,SCRYPT',
               # Defines.
               '-DWIN32',
               # Symbols to filter from the export list.