Replace deprecated word to comply with inclusive language guidelines

Replace "master" word in the context of AXI protocol, with the
recommended word "manager".

Change-Id: If594db7ae96b3ad07afd156a8d788846f9bdb34d
diff --git a/drivers/timing_adapter/include/timing_adapter.h b/drivers/timing_adapter/include/timing_adapter.h
index ef4f9b9..45133cd 100644
--- a/drivers/timing_adapter/include/timing_adapter.h
+++ b/drivers/timing_adapter/include/timing_adapter.h
@@ -28,7 +28,7 @@
 /** TIMING ADAPTER
  *
  * The timing adapter is an AXI-to-AXI bridge for providing well-defined memory timing
- * to allow performance evaluation of an AXI master. The bridge works by delaying the
+ * to allow performance evaluation of an AXI manager. The bridge works by delaying the
  * responses from the memory according to run-time configurable parameters that can be
  * set in the timing adapter. Parameters include read and write response latencies,
  * no. of outstanding transactions, and a model of interferring traffic.