OpenSSL 3.5.3 tarball is missing include/openssl/core.h and
include/internal/core.h headers. These are standard OpenSSL 3.x
headers that are referenced by multiple source files.
- Add P0-add-missing-core-headers.patch with both missing headers
- Update recipe.toml to apply the patch
- Headers sourced from official OpenSSL 3.5.3 branch on GitHub
Fixes build failure:
fatal error: openssl/core.h: No such file or directory
