CMSIS-NN : Update weight offset as zero in FC

Fully Connected implementation is updated to reflect
zero weight offset as per int8 spec.

MVE version and non-DSP extension versions are updated

Change-Id: Ia7d96d596169abd016d1e2d2a0eb5491b6dd28ed
diff --git a/ARM.CMSIS.pdsc b/ARM.CMSIS.pdsc
index 9fd5884..c2300b3 100644
--- a/ARM.CMSIS.pdsc
+++ b/ARM.CMSIS.pdsc
@@ -24,12 +24,12 @@
        - RTX4: Purged pre-built libs from Git
       CMSIS-RTOS2:
        - RTX5: Purged pre-built libs from Git
-      CMSIS-NN: 2.0.0 (see revision history for details)
+      CMSIS-NN: 3.0.0 (see revision history for details including version 2.0.0)
        - Major interface change for functions compatible with TensorFlow Lite for Microcontroller
        - Added optimization for SVDF kernel - DSP extension only
        - Improved MVE performance for fully Connected and max pool operator
        - NULL bias support for fully connected operator in non-MVE case(Can affect performance)
-       - Expanded unit test suite along with support for FVP
+       - Expanded existing unit test suite along with support for FVP
     </release>
     <release version="5.7.0" date="2020-04-09">
       CMSIS-Build: 0.9.0 (beta)