Bump buidlroot version to 2018.02.6

bsp/buildroot/package/semodule-utils/Config.in

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+config BR2_PACKAGE_SEMODULE_UTILS
+	bool "semodule-utils"
+	depends on BR2_TOOLCHAIN_HAS_THREADS # libsepol
+	select BR2_PACKAGE_LIBSEPOL
+	help
+	  semodule-utils is a package that contains tools for handling
+	  selinux modules.
+
+	  The package will install the following utilities:
+	  * semodule_deps - Show the dependencies between SELinux
+	    policy packages.
+	  * semodule_expand - Expand a SELinux policy module package.
+	  * semodule_link - Link SELinux policy module packages together
+	  * semodule_package - Create a SELinux policy module package.
+
+	  https://github.com/SELinuxProject/selinux/wiki/Releases
+
+comment "semodule-utils needs a toolchain w/ threads"
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

bsp/buildroot/package/semodule-utils/semodule-utils.hash

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+# https://github.com/SELinuxProject/selinux/wiki/Releases
+sha256 90c98b3362a43b4da2a51a9176820a56f3e615225e23e3395bc566c4490786ba semodule-utils-2.7.tar.gz

bsp/buildroot/package/semodule-utils/semodule-utils.mk

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+################################################################################
+#
+# semodule-utils
+#
+################################################################################
+
+SEMODULE_UTILS_VERSION = 2.7
+SEMODULE_UTILS_SITE = https://raw.githubusercontent.com/wiki/SELinuxProject/selinux/files/releases/20170804
+SEMODULE_UTILS_LICENSE = GPL-2.0
+SEMODULE_UTILS_LICENSE_FILES = COPYING
+SEMODULE_UTILS_DEPENDENCIES = libsepol
+
+SEMODULE_UTILS_MAKE_OPTS += \
+	$(TARGET_CONFIGURE_OPTS) \
+	LIBSEPOLA=$(STAGING_DIR)/usr/lib/libsepol.a
+
+# We need to pass DESTDIR at build time because it's used by
+# semodule-utils build system to find headers and libraries.
+define SEMODULE_UTILS_BUILD_CMDS
+	$(MAKE) -C $(@D) $(SEMODULE_UTILS_MAKE_OPTS) DESTDIR=$(STAGING_DIR) all
+endef
+
+define SEMODULE_UTILS_INSTALL_TARGET_CMDS
+	$(MAKE) -C $(@D) $(SEMODULE_UTILS_MAKE_OPTS) DESTDIR=$(TARGET_DIR) install
+endef
+
+$(eval $(generic-package))