Remove legacy lwIP plugins

Now that the lwIP VFS plugin has become a first class IP stack it is
time to remove the lwIP 1.x library and the associated libc plugins.

Fix #2958

repos/dde_linux/run/usb_rndis.run

@@ -13,6 +13,7 @@ set build_components {
 	drivers/timer drivers/usb
 	server/tcp_terminal
 	test/terminal_echo
+	lib/vfs/lwip
 }
 
 proc gpio_drv { } { if {[have_spec rpi] && [have_spec hw]}  { return hw_gpio_drv }
@@ -66,8 +67,11 @@ set config {
 		<provides> <service name="Terminal"/> </provides>
 		<config>
 			<policy label_prefix="test-terminal_echo" port="8888"/>
-			<vfs> <dir name="dev"> <log/> </dir> </vfs>
-			<libc stdout="/dev/log"/>
+			<vfs>
+				<dir name="dev"> <log/> </dir>
+				<dir name="socket"> <lwip dhcp="yes"/> </dir>
+			</vfs>
+			<libc stdout="/dev/log" socket="/socket"/>
 		</config>
 		<route>
 			<any-service> <parent/> <any-child/> </any-service>
@@ -103,6 +107,7 @@ set boot_modules {
 	libc.lib.so vfs.lib.so libc_pipe.lib.so lwip_legacy.lib.so pthread.lib.so
 	tcp_terminal
 	test-terminal_echo
+	vfs_lwip.lib.so
 }
 
 append_platform_drv_boot_modules

repos/dde_linux/run/vfs_lxip.run

@@ -48,7 +48,7 @@ append config {
 		<provides> <service name="Terminal"/> </provides>
 		<config ld_verbose="yes">
 			<policy label="test-terminal_echo" port="8888"/>
-			<libc stdout="/dev/log">
+			<libc stdout="/dev/log" socket="/socket"/>
 				<vfs>
 					<dir name="dev"> <log/> </dir>
 					<dir name="socket">