wifi_stack: Move to network_stack process

Switch the default target to use the wifi stack APK inside the
network_stack process.

Bug: 135691051
Test: Manual tests
- manual connect to wifi networks
- Remove networks
Test: Will send for ACTS wifi regression testing
Change-Id: I54a58157f9f62062366dd16718d401bd6276bca6
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index 71716ab..d3ee508 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -268,7 +268,7 @@
     vold \
     WallpaperBackup \
     watchdogd \
-    InProcessWifiStack \
+    WifiStack \
     wificond \
     wm \