dde_linux: copy vfs_lxip -> vfs_legacy_lxip

Make a copy of vfs_lxip so it can be revived easily. The plugin can now
be used like

! <legacy_lxip dhcp="yes"/>

issue #5104

repos/dde_linux/lib/mk/vfs_legacy_lxip.mk

@@ -0,0 +1,23 @@
+SHARED_LIB = yes
+
+VFS_DIR  = $(REP_DIR)/src/lib/vfs/legacy_lxip
+LXIP_DIR = $(REP_DIR)/src/lib/legacy_lxip
+
+LIBS    += legacy_lxip lxip_include
+INC_DIR += $(VFS_DIR)
+LD_OPT  += --version-script=$(VFS_DIR)/symbol.map
+SRC_CC   = vfs.cc
+
+vpath %.cc $(REP_DIR)/src/lib/vfs/legacy_lxip
+
+SETUP_SUFFIX =
+CC_OPT += -DSETUP_SUFFIX=$(SETUP_SUFFIX)
+
+CC_OPT += -U__linux__ -D__KERNEL__
+CC_OPT += -DCONFIG_INET -DCONFIG_BASE_SMALL=0 -DCONFIG_DEBUG_LOCK_ALLOC \
+          -DCONFIG_IP_PNP_DHCP
+
+CC_C_OPT  += -include $(LXIP_DIR)/include/lx_emul.h
+CC_CXX_OPT += -fpermissive
+
+CC_CXX_WARN_STRICT =

repos/dde_linux/recipes/src/vfs_legacy_lxip/content.mk

@@ -0,0 +1,31 @@
+LIB_MK := $(addprefix lib/mk/,legacy_lxip.mk lxip_include.mk vfs_legacy_lxip.mk) \
+          $(foreach SPEC,x86_32 x86_64,lib/mk/spec/$(SPEC)/lx_kit_setjmp.mk)
+
+PORT_DIR := $(call port_dir,$(REP_DIR)/ports/dde_linux)
+
+MIRROR_FROM_REP_DIR := $(LIB_MK) \
+                       lib/import/import-lxip_include.mk \
+                       include/lxip src/include/legacy src/lib/legacy/lx_kit \
+                       src/lib/lx_kit/spec \
+                       $(foreach SPEC, \
+                                 arm_v6 arm_v7 arm_v8 x86 x86_32 x86_64, \
+                                 src/include/spec/$(SPEC)) \
+                       $(shell cd $(REP_DIR); find src/lib/legacy_lxip -type f) \
+                       $(shell cd $(REP_DIR); find src/lib/vfs -type f)
+
+MIRROR_FROM_PORT_DIR := $(shell cd $(PORT_DIR); find src/lib/lxip -type f)
+
+content: $(MIRROR_FROM_REP_DIR) $(MIRROR_FROM_PORT_DIR)
+
+$(MIRROR_FROM_REP_DIR):
+	$(mirror_from_rep_dir)
+
+$(MIRROR_FROM_PORT_DIR):
+	mkdir -p $(dir $@)
+	cp -r $(PORT_DIR)/$@ $@
+
+content: LICENSE
+LICENSE:
+	( echo "LxIP is based on Linux, which is licensed under the"; \
+	  echo "GNU General Public License version 2, see:"; \
+	  echo "https://www.kernel.org/pub/linux/kernel/COPYING" ) > $@

repos/dde_linux/recipes/src/vfs_legacy_lxip/hash

@@ -0,0 +1 @@
+2023-11-08 292058fabece5e1c6823163b0c61846d65313e5d

repos/dde_linux/recipes/src/vfs_legacy_lxip/used_apis

@@ -0,0 +1,7 @@
+base
+nic_session
+os
+so
+timer_session
+vfs
+format

repos/dde_linux/src/lib/vfs/legacy_lxip/symbol.map

@@ -0,0 +1,9 @@
+{
+	global:
+
+		vfs_file_system_factory;
+
+	local:
+
+		*;
+};