Look for hwservicemanager in it's old location as well

Mainline modules take the newer version of libhidl and use it on older
devices that will still have hwservicemanager in /system/bin/ instead of
/system_ext/bin so we still need to look there.

Test: m
Test: rerun testcase from bug including this CL
Bug: 298669409
Change-Id: I52f0e8b3dd63a0fff9c265bc9f229ab63a66ffde
diff --git a/transport/ServiceManagement.cpp b/transport/ServiceManagement.cpp
index 78c1e96..6d85b57 100644
--- a/transport/ServiceManagement.cpp
+++ b/transport/ServiceManagement.cpp
@@ -211,7 +211,8 @@
 }
 static bool isHwServiceManagerInstalled() {
     return access("/system_ext/bin/hwservicemanager", F_OK) == 0 ||
-           access("/system/system_ext/bin/hwservicemanager", F_OK) == 0;
+           access("/system/system_ext/bin/hwservicemanager", F_OK) == 0 ||
+           access("/system/bin/hwservicemanager", F_OK) == 0;
 }
 
 /*