[WifiCoex] Fix VTS test for implemented hal

Fix coex VTS test by configuring chip for sta iface before invoking the
coex hal api.

Bug: 177929636
Test: atest VtsHalWifiV1_5TargetTest
Change-Id: I5ead53e603a2136e3c8b2d931c512e6d337f4ba7
diff --git a/wifi/1.5/vts/functional/wifi_chip_hidl_test.cpp b/wifi/1.5/vts/functional/wifi_chip_hidl_test.cpp
index 5ac747d..07f7f47 100644
--- a/wifi/1.5/vts/functional/wifi_chip_hidl_test.cpp
+++ b/wifi/1.5/vts/functional/wifi_chip_hidl_test.cpp
@@ -147,6 +147,7 @@
  * setCoexUnsafeChannels
  */
 TEST_P(WifiChipHidlTest, setCoexUnsafeChannels) {
+    configureChipForIfaceType(IfaceType::STA, true);
     // Test with empty vector of CoexUnsafeChannels
     std::vector<IWifiChip::CoexUnsafeChannel> vec;
     const auto& statusEmpty =