Bump buildroot to 2019.02

bsp/buildroot/package/docker-cli/Config.in

@@ -0,0 +1,25 @@
+config BR2_PACKAGE_DOCKER_CLI
+	bool "docker-cli"
+	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
+	depends on BR2_TOOLCHAIN_HAS_THREADS
+	help
+	  Docker is a platform to build, ship,
+	  and run applications as lightweight containers.
+
+	  https://github.com/docker/cli
+
+if BR2_PACKAGE_DOCKER_CLI
+
+config BR2_PACKAGE_DOCKER_CLI_STATIC
+	bool "build static client"
+	depends on !BR2_STATIC_LIBS
+	help
+	  Build a static docker client.
+
+endif
+
+comment "docker-cli needs a toolchain w/ threads"
+	depends on BR2_PACKAGE_HOST_GO_ARCH_SUPPORTS
+	depends on BR2_PACKAGE_HOST_GO_CGO_LINKING_SUPPORTS
+	depends on !BR2_TOOLCHAIN_HAS_THREADS

bsp/buildroot/package/docker-cli/docker-cli.hash

@@ -0,0 +1,3 @@
+# Locally calculated
+sha256	29f3a435bfcd52dbe26f6315ee92bffc0220a537608935a2c3870f6b729fc16e  docker-cli-v18.09.2.tar.gz
+sha256	2d81ea060825006fc8f3fe28aa5dc0ffeb80faf325b612c955229157b8c10dc0  LICENSE

bsp/buildroot/package/docker-cli/docker-cli.mk

@@ -0,0 +1,31 @@
+################################################################################
+#
+# docker-cli
+#
+################################################################################
+
+DOCKER_CLI_VERSION = v18.09.2
+DOCKER_CLI_SITE = $(call github,docker,cli,$(DOCKER_CLI_VERSION))
+DOCKER_CLI_WORKSPACE = gopath
+
+DOCKER_CLI_LICENSE = Apache-2.0
+DOCKER_CLI_LICENSE_FILES = LICENSE
+
+DOCKER_CLI_DEPENDENCIES = host-pkgconf
+
+DOCKER_CLI_TAGS = autogen
+DOCKER_CLI_BUILD_TARGETS = cmd/docker
+
+DOCKER_CLI_LDFLAGS = \
+	-X github.com/docker/cli/cli.GitCommit=$(DOCKER_CLI_VERSION) \
+	-X github.com/docker/cli/cli.Version=$(DOCKER_CLI_VERSION)
+
+ifeq ($(BR2_PACKAGE_DOCKER_CLI_STATIC),y)
+DOCKER_CLI_LDFLAGS += -extldflags '-static'
+DOCKER_CLI_TAGS += osusergo netgo
+DOCKER_CLI_GO_ENV = CGO_ENABLED=no
+endif
+
+DOCKER_CLI_INSTALL_BINS = $(notdir $(DOCKER_CLI_BUILD_TARGETS))
+
+$(eval $(golang-package))