dtc: import package for dtc & fdt from packages feed

fdt* utils are needed by targets that use U-Boot FIT images for
sysupgrade. It includes all recent BCM4908 SoC routers as Broadcom
switched from CFE to U-Boot.

fdtget is required for extracting images (bootfs & rootfs) from
Broadcom's ITB. Extracted images can be then flashed to UBI volumes.

sysupgrade is core functionality so it needs dtc as part of base code
base.

Cc: Yousong Zhou <yszhou4tech@gmail.com>
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

package/utils/dtc/Makefile

@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Copyright (C) 2016-2019 Yousong Zhou <yszhou4tech@gmail.com>
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=dtc
+PKG_VERSION:=1.6.0
+PKG_RELEASE:=1
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+PKG_HASH:=10503b0217e1b07933e29e8d347a00015b2431bea5f59afe0bed3af30340c82d
+PKG_SOURCE_URL:=@KERNEL/software/utils/dtc
+PKG_LICENSE:=GPL-2.0
+PKG_LICENSE_FILES:=GPL
+PKG_INSTALL:=1
+PKG_MAINTAINER:=Yousong Zhou <yszhou4tech@gmail.com>
+
+include $(INCLUDE_DIR)/package.mk
+
+
+define Package/dtc
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=Device Tree Compiler
+  URL:=https://git.kernel.org/pub/scm/utils/dtc/dtc.git
+endef
+
+define Package/dtc/description
+  Device Tree Compiler for Flat Device Trees Device Tree Compiler, dtc, takes
+  as input a device-tree in a given format and outputs a device-tree in another
+  format for booting kernels on embedded systems.
+endef
+
+define Package/dtc/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(CP) $(PKG_INSTALL_DIR)/bin/dtc $(1)/usr/bin
+endef
+
+
+# See Documentation/manual.txt for details about each utility
+define Package/fdt-utils
+  SECTION:=utils
+  CATEGORY:=Utilities
+  TITLE:=Flat Device Tree Utilities
+  URL:=https://git.kernel.org/pub/scm/utils/dtc/dtc.git
+  DEPENDS:=+libfdt
+endef
+
+define Package/fdt-utils/install
+	$(INSTALL_DIR) $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/convert-dtsv0 $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/fdtdump $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/fdtget $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/fdtput $(1)/usr/bin
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/bin/fdtoverlay $(1)/usr/bin
+endef
+
+
+define Package/libfdt
+  SECTION:=libs
+  CATEGORY:=Libraries
+  TITLE:=a utility library for reading and manipulating dtb files
+  URL:=https://git.kernel.org/pub/scm/utils/dtc/dtc.git
+endef
+
+define Package/libfdt/description
+  This is a library containing functions for manipulating Flat Device Trees.
+endef
+
+define Package/libfdt/install
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/lib/libfdt*.so* $(1)/usr/lib
+endef
+
+# NO_PYTHON is for disabling pylibfdt
+MAKE_FLAGS += \
+	PREFIX= \
+	NO_PYTHON=1 \
+	NO_VALGRIND=1 \
+	NO_YAML=1 \
+	EXTRA_CFLAGS=$(EXTRA_CFLAGS) \
+
+define Build/InstallDev
+	$(INSTALL_DIR) $(1)/usr/lib
+	$(INSTALL_DIR) $(1)/usr/include
+	$(CP) $(PKG_INSTALL_DIR)/include/* $(1)/usr/include
+	$(CP) $(PKG_INSTALL_DIR)/lib/* $(1)/usr/lib
+endef
+
+$(eval $(call BuildPackage,dtc))
+$(eval $(call BuildPackage,fdt-utils))
+$(eval $(call BuildPackage,libfdt))