binder: RpcSession::*MaxThreads -> *MaxIncomingThreads

We'll add a separate number for outgoing threads

Bug: 194225767
Test: pass

Change-Id: I7bf178c098adc6359582792a2f1ca1248a336b9f
diff --git a/libs/binder/RpcState.cpp b/libs/binder/RpcState.cpp
index ef62f20..9ba64f3 100644
--- a/libs/binder/RpcState.cpp
+++ b/libs/binder/RpcState.cpp
@@ -855,7 +855,7 @@
 
             switch (transaction->code) {
                 case RPC_SPECIAL_TRANSACT_GET_MAX_THREADS: {
-                    replyStatus = reply.writeInt32(session->getMaxThreads());
+                    replyStatus = reply.writeInt32(session->getMaxIncomingThreads());
                     break;
                 }
                 case RPC_SPECIAL_TRANSACT_GET_SESSION_ID: {