Add missing newline to health/wifi AIDL interfaces

This change adds a missing newline character to the end of dump() for
the default health and wifi int

Add missing newline to health/wifi AIDL interfaces

This change adds a missing newline character to the end of dump() for
health and wifi.

Test: Take a bugreport and verify that the "X was the duration of
      dumpsys Y" lines aren't preceded by the final line of the dump.
Test: Run "dumpsys android.hardware.health.IHealth/default" and verify
      that the new line exists.
Test: Run "dumpsys android.hardware.wifi.IWifi/default" and verify that
      the new line exists.
Bug: 278081288
Change-Id: I173dd174b5bab808c6296f7163982393e60ba0c6
diff --git a/wifi/aidl/default/wifi.cpp b/wifi/aidl/default/wifi.cpp
index e30c38a..35f27e2 100644
--- a/wifi/aidl/default/wifi.cpp
+++ b/wifi/aidl/default/wifi.cpp
@@ -16,6 +16,7 @@
 
 #include "wifi.h"
 
+#include <android-base/file.h>
 #include <android-base/logging.h>
 
 #include "aidl_return_util.h"
@@ -88,6 +89,7 @@
         if (!chip.get()) continue;
         chip->dump(fd, args, numArgs);
     }
+    ::android::base::WriteStringToFd("\n", fd);
     return STATUS_OK;
 }