add EWT103-W15 series board

Author: flyingcys

boards/LN882H/EWT103-W15/Kconfig

@@ -27,4 +27,9 @@ choice
             rsource "./WL2H-U/Kconfig"
         endif
 
+    config BOARD_CHOICE_EWT103_W15
+        bool "EWT103-W15"
+        if (BOARD_CHOICE_EWT103_W15)
+            rsource "./EWT103-W15/Kconfig"
+        endif
 endchoice

boards/LN882H/Kconfig

@@ -0,0 +1,15 @@
+CONFIG_BOARD_CHOICE_LN882H=y
+CONFIG_ENABLE_BT_SERVICE=y
+CONFIG_ENABLE_LIBLWIP=y
+CONFIG_MEM_SIZE=13312
+CONFIG_PBUF_LINK_ENCAPSULATION_HLEN=0
+CONFIG_LWIP_NETIF_HOSTNAME=1
+CONFIG_LWIP_TCPIP_CORE_LOCKING=1
+CONFIG_LWIP_EAPOL_SUPPORT=0
+CONFIG_LWIP_TX_PBUF_ZERO_COPY=0
+CONFIG_CONFIG_TUYA_SOCK_SHIM=0
+CONFIG_LWIP_DHCPC_STATIC_IPADDR_ENABLE=1
+CONFIG_ETHARP_SUPPORT_STATIC_ENTRIES=1
+CONFIG_LWIP_NETIF_STATUS_CALLBACK=1
+CONFIG_LWIP_TIMEVAL_PRIVATE=0
+CONFIG_IN_ADDR_T_DEFINED=y