Fix BpfLoaderRcUtils to support IOS_8859_1

Test: TH
Change-Id: Ic53e903f7a971c92793e3360a5d3f53c97c0503b
diff --git a/service/src/com/android/server/BpfLoaderRcUtils.java b/service/src/com/android/server/BpfLoaderRcUtils.java
index 1b6ee55..293e757 100644
--- a/service/src/com/android/server/BpfLoaderRcUtils.java
+++ b/service/src/com/android/server/BpfLoaderRcUtils.java
@@ -87,7 +87,7 @@
         List<String> contents = new ArrayList<>();
         boolean bpfSectionFound = false;
         try (BufferedReader br = new BufferedReader(
-                new InputStreamReader(inputStream, StandardCharsets.UTF_8))) {
+                new InputStreamReader(inputStream, StandardCharsets.ISO_8859_1))) {
             String line;
             while ((line = br.readLine()) != null) {
                 line = line.trim();