Add --cross-compile-prefix option to openssl CMakeList.txt

Author: sjperkins

ci/vcpkg/ports.patch

@@ -64,3 +64,15 @@ index 4611af6..d11936f 100644
              set(brew_package_name "python")
              set(apt_package_name "python3")
          endif()
+diff --git a/ports/openssl/unix/CMakeLists.txt b/ports/openssl/unix/CMakeLists.txt
+index 75c21805a..f95792a74 100644
+--- a/ports/openssl/unix/CMakeLists.txt
++++ b/ports/openssl/unix/CMakeLists.txt
+@@ -224,6 +224,7 @@ else()
+             "--prefix=${CMAKE_INSTALL_PREFIX}"
+             "--libdir=${CMAKE_INSTALL_PREFIX}/lib"
+             "--openssldir=/etc/ssl"
++            "--cross-compile-prefix=\"\""
+             ${CFLAGS}
+             VERBATIM
+             APPEND