MLECO-2426: Support for new Corstone-300 app note AN552 rev B.

These changes will limit the use of FPGA internal SRAM from a max
of 4MiB to 2MiB and the BRAM from 2MiB to 1MiB.

Change-Id: I69c8e695aee26ff4f235bfe83ffd26efbd66f547
diff --git a/source/use_case/kws_asr/usecase.cmake b/source/use_case/kws_asr/usecase.cmake
index 5b179c6..d8629b6 100644
--- a/source/use_case/kws_asr/usecase.cmake
+++ b/source/use_case/kws_asr/usecase.cmake
@@ -55,7 +55,7 @@
 
 
 USER_OPTION(${use_case}_ACTIVATION_BUF_SZ "Activation buffer size for the chosen model"
-    0x00400000
+    0x00200000
     STRING)
 
 USER_OPTION(${use_case}_MODEL_SCORE_THRESHOLD_KWS "Specify the score threshold [0.0, 1.0) that must be applied to the KWS results for a label to be deemed valid."