CMSIS-DAP: Update version and revision history
diff --git a/ARM.CMSIS.pdsc b/ARM.CMSIS.pdsc
index 3841ec5..a455378 100644
--- a/ARM.CMSIS.pdsc
+++ b/ARM.CMSIS.pdsc
@@ -18,6 +18,8 @@
        - Support for MVEI extension optimization for int16 depthwise_conv
        - Support for MVEI extension optimization for int16 max and average pooling
        - Support for MVEI extension optimization for int16 fully connected
+      CMSIS-DAP: 2.1.2 (see revision history for details)
+       - Fix DAP_Transfer handling when transfer fails
     </release>
     <release version="5.9.0" date="2022-05-02">
       CMSIS-Core(M): 5.6.0