tests: drivers: nrf_wifi: Add twister combo for vendor stats

This ensures vendor stats always builds.

Signed-off-by: Chaitanya Tata <[email protected]>

Author: krish2718

tests/drivers/wifi/nrf_wifi/testcase.yaml

@@ -44,3 +44,7 @@ tests:
     extra_configs:
       - CONFIG_NET_PKT_BUF_TX_DATA_ALLOC_ALIGN_LEN=4
       - CONFIG_NET_BUF_VARIABLE_DATA_SIZE=y
+  drivers.wifi.build.ethernet_stats:
+    extra_configs:
+      - CONFIG_NET_STATISTICS_ETHERNET=y
+      - CONFIG_NET_STATISTICS_ETHERNET_VENDOR=y