lshal: read binder stats from binderfs

If binderfs is mounted, lshal should read binder stats
from /dev/binderfs/binder_logs instead of debugfs.

Test: atest lshal_test, adb shell lshal
Change-Id: Id585cdcd71c0ab4346045a099c2e3d0ddffcecc0
diff --git a/cmds/lshal/ListCommand.h b/cmds/lshal/ListCommand.h
index b3ed23d..acc0dcf 100644
--- a/cmds/lshal/ListCommand.h
+++ b/cmds/lshal/ListCommand.h
@@ -104,7 +104,8 @@
     Status fetchBinderizedEntry(const sp<::android::hidl::manager::V1_0::IServiceManager> &manager,
                                 TableEntry *entry);
 
-    // Get relevant information for a PID by parsing files under /d/binder.
+    // Get relevant information for a PID by parsing files under
+    // /dev/binderfs/binder_logs or /d/binder.
     // It is a virtual member function so that it can be mocked.
     virtual bool getPidInfo(pid_t serverPid, PidInfo *info) const;
     // Retrieve from mCachedPidInfos and call getPidInfo if necessary.