feat(lwip): Restructure lwip folder to support different platform

components/lwip/CMakeLists.txt

@@ -1,24 +1,20 @@
 set(COMPONENT_ADD_INCLUDEDIRS
-    include
-    lwip/src/include
-    lwip/src/include/lwip
-    lwip/src/include/posix
-    lwip/src/include/lwip
     include/lwip/apps
-    include/lwip/port
-    apps)
+    lwip/src/include
+    lwip/src/include/posix
+    port/esp8266/include)
 
 set(COMPONENT_SRCDIRS
+    apps/dhcpserver
+    apps/multi-threads
     lwip/src/api
     lwip/src/apps/sntp
-    lwip/src/netif
     lwip/src/core
     lwip/src/core/ipv4
     lwip/src/core/ipv6
-    port/freertos
-    port/netif
-    apps/dhcpserver
-    apps/multi-threads)
+    lwip/src/netif
+    port/esp8266/freertos
+    port/esp8266/netif)
 
 set(COMPONENT_REQUIRES tcpip_adapter esp8266 freertos)
 

components/lwip/component.mk

@@ -1,10 +1,20 @@
 #
 # Component Makefile
 #
-COMPONENT_ADD_INCLUDEDIRS += lwip/src/include lwip/src/include/lwip lwip/src/include/posix lwip/include/lwip \
-								include/lwip/apps include/lwip/port apps
+COMPONENT_ADD_INCLUDEDIRS += include/lwip/apps \
+                             lwip/src/include \
+                             lwip/src/include/posix \
+                             port/esp8266/include
 
-COMPONENT_SRCDIRS += lwip/src/api lwip/src/apps/sntp lwip/src/netif lwip/src/core lwip/src/core/ipv4 lwip/src/core/ipv6 \
-								port/freertos port/netif apps/dhcpserver apps/multi-threads
+COMPONENT_SRCDIRS += apps/dhcpserver \
+                     apps/multi-threads \
+                     lwip/src/api \
+                     lwip/src/apps/sntp \
+                     lwip/src/core \
+                     lwip/src/core/ipv4 \
+                     lwip/src/core/ipv6 \
+                     lwip/src/netif \
+                     port/esp8266/freertos \
+                     port/esp8266/netif
 
 CFLAGS += -Wno-address #lots of LWIP source files evaluate macros that check address of stack variables