initial buildroot for linux 5.15

package/openssl/Config.in

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+config BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
+	bool
+
+config BR2_PACKAGE_OPENSSL
+	bool "openssl support"
+	select BR2_PACKAGE_HAS_OPENSSL
+	help
+	  Select the desired ssl library provider.
+
+if BR2_PACKAGE_OPENSSL
+
+choice
+	prompt "ssl library"
+	help
+	  Select OpenSSL or LibreSSL.
+
+config BR2_PACKAGE_LIBOPENSSL
+	bool "openssl"
+	select BR2_PACKAGE_ZLIB
+	help
+	  A collaborative effort to develop a robust, commercial-grade,
+	  fully featured, and Open Source toolkit implementing the
+	  Secure Sockets Layer (SSL v2/v3) and Transport Security
+	  (TLS v1) as well as a full-strength general-purpose
+	  cryptography library.
+
+	  http://www.openssl.org/
+
+	  Note: Some helper scripts need perl.
+
+source "package/libopenssl/Config.in"
+
+config BR2_PACKAGE_LIBRESSL
+	bool "libressl"
+	depends on !BR2_PACKAGE_OPENSSL_FORCE_LIBOPENSSL
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	# uClibc on noMMU doesn't provide __register_atfork()
+	depends on !(BR2_TOOLCHAIN_USES_UCLIBC && !BR2_USE_MMU)
+	help
+	  LibreSSL is a version of the TLS/crypto stack forked from
+	  OpenSSL in 2014, with goals of modernizing the codebase,
+	  improving security, and applying best practice development
+	  processes.
+
+	  http://www.libressl.org/
+
+source "package/libressl/Config.in"
+
+# openssl from br2-external trees, if any
+source "$BR2_BASE_DIR/.br2-external.in.openssl"
+
+endchoice
+
+config BR2_PACKAGE_HAS_OPENSSL
+	bool
+
+config BR2_PACKAGE_PROVIDES_OPENSSL
+	string
+	default "libopenssl" if BR2_PACKAGE_LIBOPENSSL
+	default "libressl" if BR2_PACKAGE_LIBRESSL
+
+endif
+
+# ensure libopenssl is used for the host variant
+config BR2_PACKAGE_PROVIDES_HOST_OPENSSL
+	string
+	default "host-libopenssl"

package/openssl/openssl.mk

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+################################################################################
+#
+# openssl
+#
+################################################################################
+
+$(eval $(virtual-package))
+$(eval $(host-virtual-package))