fdt: port of the device tree manipulation library

fixes #188

lib/import/import-fdt.mk

@@ -0,0 +1,2 @@
+INC_DIR += $(REP_DIR)/src/lib/fdt \
+           $(call select_from_ports,fdt)/src/lib/fdt/libfdt

lib/mk/fdt.mk

@@ -0,0 +1,16 @@
+SHARED_LIB = yes
+
+FDT_PORT := $(call select_from_ports,fdt)/src/lib/fdt/libfdt
+
+INC_DIR  += $(REP_DIR)/src/lib/fdt $(FDT_PORT)
+
+CC_C_OPT += -include $(REP_DIR)/src/lib/fdt/libfdt_env.h
+LD_OPT   += --version-script=$(REP_DIR)/src/lib/fdt/symbol.map
+
+SRC_C = fdt.c fdt_ro.c fdt_wip.c fdt_sw.c fdt_rw.c fdt_strerror.c \
+        fdt_empty_tree.c fdt_addresses.c fdt_overlay.c
+
+SRC_CC = libfdt_env.cc
+
+vpath %.c  $(FDT_PORT)
+vpath %.cc $(REP_DIR)/src/lib/fdt

lib/symbols/fdt

@@ -0,0 +1,66 @@
+fdt_next_node T
+fdt_check_header T
+fdt_move T
+fdt_string T
+fdt_num_mem_rsv T
+fdt_get_mem_rsv T
+fdt_subnode_offset_namelen T
+fdt_subnode_offset T
+fdt_path_offset_namelen T
+fdt_path_offset T
+fdt_get_name T
+fdt_get_property_namelen T
+fdt_get_property T
+fdt_getprop_namelen T
+fdt_getprop T
+fdt_get_phandle T
+fdt_get_alias_namelen T
+fdt_get_alias T
+fdt_get_path T
+fdt_supernode_atdepth_offset T
+fdt_node_depth T
+fdt_parent_offset T
+fdt_node_offset_by_prop_value T
+fdt_node_offset_by_phandle T
+fdt_node_check_compatible T
+fdt_node_offset_by_compatible T
+fdt_setprop_inplace T
+fdt_nop_property T
+fdt_nop_node T
+fdt_create T
+fdt_add_reservemap_entry T
+fdt_finish_reservemap T
+fdt_begin_node T
+fdt_property T
+fdt_end_node T
+fdt_finish T
+fdt_open_into T
+fdt_pack T
+fdt_add_mem_rsv T
+fdt_del_mem_rsv T
+fdt_set_name T
+fdt_setprop T
+fdt_delprop T
+fdt_add_subnode_namelen T
+fdt_add_subnode T
+fdt_del_node T
+fdt_strerror T
+fdt_offset_ptr T
+fdt_next_tag T
+fdt_appendprop T
+fdt_create_empty_tree T
+fdt_first_property_offset T
+fdt_get_property_by_offset T
+fdt_getprop_by_offset T
+fdt_next_property_offset T
+fdt_first_subnode T
+fdt_next_subnode T
+fdt_address_cells T
+fdt_size_cells T
+fdt_stringlist_contains T
+fdt_stringlist_count T
+fdt_stringlist_search T
+fdt_stringlist_get T
+fdt_resize T
+fdt_overlay_apply T
+fdt_get_string T