TIF: add TvInputManager methods to notify apps

Adds TvInputManager methods to notify apps with protected broadcasts
for:
1. Disabling browsable state of preview and watch next programs.
2. Adding preview programs to watch next programs.

Test: build and verify manually to check if notifications are
      broadcasted.
Bug: 35881266

Change-Id: I20fd5b63f42b2c74277315bbbd251b71c649e5c1
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index a5eac46..e4be27b 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -1423,7 +1423,8 @@
                 traceEnd();
             }
 
-            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_LIVE_TV)) {
+            if (mPackageManager.hasSystemFeature(PackageManager.FEATURE_LIVE_TV)
+                    || mPackageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
                 traceBeginAndSlog("StartTvInputManager");
                 mSystemServiceManager.startService(TvInputManagerService.class);
                 traceEnd();