deps: keep required OpenSSL doc files

We need two specific files to generate platform-specific files

PR-URL: #58431
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: targos

deps/openssl/.gitignore

@@ -1,5 +1,9 @@
 openssl/demos
-openssl/doc
+openssl/doc/*
+!openssl/doc/man1
+openssl/doc/man1/*
+!openssl/doc/man1/build.info
+!openssl/doc/build.info
 openssl/fuzz/corpora
 openssl/makefile.in
 openssl/Makefile.in