libbinder: explicit log for frozen process

This error is ambiguous without the log, and it logged
before this case was split from the default case.

Bug: 333689623
Test: N/A
Change-Id: Ia6cfe7fc35a6e79f1ae3284674f101efc784af40
diff --git a/libs/binder/IPCThreadState.cpp b/libs/binder/IPCThreadState.cpp
index ef96f80..2c7ab15 100644
--- a/libs/binder/IPCThreadState.cpp
+++ b/libs/binder/IPCThreadState.cpp
@@ -1027,6 +1027,7 @@
             goto finish;
 
         case BR_FROZEN_REPLY:
+            ALOGW("Transaction failed because process frozen.");
             err = FAILED_TRANSACTION;
             goto finish;