Added ifdef to resolve CI build error

Author: bhmanda-silabs

src/platform/silabs/rs911x/wfx_sl_ble_init.h

@@ -71,7 +71,7 @@ extern "C" {
 #define RSI_BLE_CHARACTERISTIC_TX_MEASUREMENT_HANDLE_LOCATION (4)
 #define RSI_BLE_CHARACTERISTIC_TX_GATT_SERVER_CLIENT_HANDLE_LOCATION (5)
 
-#if CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
+#ifdef CHIP_ENABLE_ADDITIONAL_DATA_ADVERTISING
 #define RSI_BLE_CUSTOM_CHARACTERISTIC_C3_SIZE (16)
 #define RSI_BLE_CUSTOM_CHARACTERISTIC_C3_RESERVED 0x00, 0x00, 0x00
 #define RSI_BLE_CUSTOM_CHARACTERISTIC_C3_VALUE_128_DATA_1 0x64630238