initial buildroot for linux 5.15

package/atf/Config.in

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+config BR2_PACKAGE_ATF
+	bool "atf"
+	depends on BR2_INSTALL_LIBSTDCPP
+	depends on BR2_USE_MMU # fork()
+	help
+	  ATF, or Automated Testing Framework, is a collection of
+	  libraries to write test programs in C, C++ and POSIX shell.
+
+	  https://github.com/jmmv/atf
+
+comment "atf needs a toolchain w/ C++"
+	depends on !BR2_INSTALL_LIBSTDCPP
+	depends on BR2_USE_MMU

package/atf/atf.hash

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+# Locally computed
+sha256 92bc64180135eea8fe84c91c9f894e678767764f6dbc8482021d4dde09857505  atf-0.21.tar.gz
+sha256 2a15172ddf6386297734c9800c899e6e8dc16c5a03931dcf95a9ab321a24cfe4  COPYING

package/atf/atf.mk

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+################################################################################
+#
+# atf
+#
+################################################################################
+
+ATF_VERSION = 0.21
+ATF_SITE = https://github.com/jmmv/atf/releases/download/atf-$(ATF_VERSION)
+ATF_INSTALL_STAGING = YES
+ATF_LICENSE = BSD-2-Clause, BSD-3-Clause
+ATF_LICENSE_FILES = COPYING
+# Ships a beta libtool version hence our patch doesn't apply.
+ATF_AUTORECONF = YES
+# Do not install precompiled tests.
+ATF_INSTALL_TARGET_OPTS = DESTDIR=$(TARGET_DIR) install-exec
+
+# ATF_SHELL defaults to the host's bash
+ATF_CONF_ENV = \
+	kyua_cv_getopt_plus=yes \
+	kyua_cv_attribute_noreturn=yes \
+	kyua_cv_getcwd_works=yes \
+	ATF_SHELL=/bin/sh
+
+$(eval $(autotools-package))