[Silabs] Adding the gn build header for the lwip IPv4 and RS9116 (project-chip#35142)

* adding the gn build header for the lwip and rs9116

* Restyled by clang-format

---------

Co-authored-by: Restyled.io <commits@restyled.io>

Author: chirag-silabs

examples/platform/silabs/efr32/rs911x/rsi_wlan_config.h

@@ -20,6 +20,10 @@
 
 #include "rsi_wlan_defines.h"
 
+#if (SL_MATTER_GN_BUILD == 0)
+#include "sl_matter_wifi_config.h"
+#endif // SL_MATTER_GN_BUILD
+
 //! Enable feature
 #define RSI_ENABLE 1
 //! Disable feature

src/lwip/silabs/lwipopts-rs911x.h

@@ -32,6 +32,10 @@
 
 #include <stdlib.h>
 
+#if (SL_MATTER_GN_BUILD == 0)
+#include "sl_matter_wifi_config.h"
+#endif // SL_MATTER_GN_BUILD
+
 #define NO_SYS 0
 #define MEM_ALIGNMENT (4)
 #define MEMP_NUM_TCP_SEG (TCP_SND_QUEUELEN + 1)
@@ -90,6 +94,12 @@
 
 #define MEMP_NUM_NETCONN (0)
 
+#if CHIP_DEVICE_CONFIG_ENABLE_IPV4
+#define LWIP_IPV4 1
+#else
+#define LWIP_IPV4 0
+#endif // CHIP_DEVICE_CONFIG_ENABLE_IPV4
+
 #ifndef LWIP_ARP
 #define LWIP_ARP (LWIP_IPV4)
 #endif /* LWIP_ARP */

src/lwip/silabs/lwipopts-wf200.h

@@ -32,6 +32,10 @@
 
 #include <stdlib.h>
 
+#if (SL_MATTER_GN_BUILD == 0)
+#include "sl_matter_wifi_config.h"
+#endif // SL_MATTER_GN_BUILD
+
 #define NO_SYS 0
 #define MEM_ALIGNMENT (4)
 #define MEMP_NUM_TCP_SEG (TCP_SND_QUEUELEN + 1)
@@ -91,6 +95,12 @@
 
 #define MEMP_NUM_NETCONN (0)
 
+#if CHIP_DEVICE_CONFIG_ENABLE_IPV4
+#define LWIP_IPV4 1
+#else
+#define LWIP_IPV4 0
+#endif // CHIP_DEVICE_CONFIG_ENABLE_IPV4
+
 #ifndef LWIP_ARP
 #define LWIP_ARP (LWIP_IPV4)
 #endif /* LWIP_ARP */