wifi: Move legacy hal types to a new namespace (2/2)

Changes in HIDL interface obejcts to use the new namespace for legacy
HAL.

Bug: 32242225
Test: Compiles
Change-Id: I7d0e9cee8656bd779a24d9eaede415317dceaf9b
diff --git a/wifi/1.0/default/wifi_nan_iface.h b/wifi/1.0/default/wifi_nan_iface.h
index f3c0640..4f89b31 100644
--- a/wifi/1.0/default/wifi_nan_iface.h
+++ b/wifi/1.0/default/wifi_nan_iface.h
@@ -35,7 +35,7 @@
 class WifiNanIface : public IWifiNanIface {
  public:
   WifiNanIface(const std::string& ifname,
-               const std::weak_ptr<WifiLegacyHal> legacy_hal);
+               const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
   // Refer to |WifiChip::invalidate()|.
   void invalidate();
   bool isValid();
@@ -135,7 +135,7 @@
   WifiStatus dataEndInternal(uint32_t cmd_id, const NanDataPathEndRequest& msg);
 
   std::string ifname_;
-  std::weak_ptr<WifiLegacyHal> legacy_hal_;
+  std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
   std::vector<sp<IWifiNanIfaceEventCallback>> event_callbacks_;
   bool is_valid_;